Audit log are printed too much

## Enhancement Task
In our testing environment, there is a database that has around 100 thousand tables. Each table has its own rule. But after we drop the database, PD will print too many logs which may affect the system performance.
```
[2023/01/16 14:59:52.593 +00:00] [INFO] [audit.go:126] ["Audit Log"] [service-info="{ServiceLabel:SetPlacementRules, Method:HTTP/1.1/POST:/pd/api/v1/config/placement-rule, Component:anonymous, IP:10.200.0
.67, StartTime:2023-01-16 14:59:52 +0000 UTC, URLParam:{\"partial\":[\"true\"]}, BodyParam:[{\"group_id\":\"TiDB_DDL_100001\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiD
B_DDL_100003\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100005\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100007\",\"g
roup_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100009\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10001\",\"group_index\":0,\"gr
oup_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100011\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100013\",\"group_index\":0,\"group_override\":fal
se,\"rules\":null},{\"group_id\":\"TiDB_DDL_100015\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100017\",\"group_index\":0,\"group_override\":false,\"rules\":null}
,{\"group_id\":\"TiDB_DDL_100019\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100021\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"T
iDB_DDL_100023\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100025\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100027\",\
"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100029\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10003\",\"group_index\":0,\"
group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100031\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100033\",\"group_index\":0,\"group_override\":f
alse,\"rules\":null},{\"group_id\":\"TiDB_DDL_100035\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100037\",\"group_index\":0,\"group_override\":false,\"rules\":nul
l},{\"group_id\":\"TiDB_DDL_100039\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100041\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\
"TiDB_DDL_100043\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100045\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100047\"
,\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100049\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10005\",\"group_index\":0,
\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100051\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100053\",\"group_index\":0,\"group_override\"
:false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100055\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100057\",\"group_index\":0,\"group_override\":false,\"rules\":n
ull},{\"group_id\":\"TiDB_DDL_100059\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100061\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\"
:\"TiDB_DDL_100063\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100065\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100067
\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100069\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10007\",\"group_index\":
0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100071\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100073\",\"group_index\":0,\"group_override
\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100075\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100077\",\"group_index\":0,\"group_override\":false,\"rules\"
:null},{\"group_id\":\"TiDB_DDL_100079\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100081\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id
\":\"TiDB_DDL_100083\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100085\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_1000
87\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100089\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10009\",\"group_index\
":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100091\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100093\",\"group_index\":0,\"group_overri
de\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100095\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100097\",\"group_index\":0,\"group_override\":false,\"rules
\":null},{\"group_id\":\"TiDB_DDL_100099\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_1001\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id
\":\"TiDB_DDL_100101\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100103\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_1001
05\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100107\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100109\",\"group_index
\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10011\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100111\",\"group_index\":0,\"group_overri
de\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100113\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100115\",\"group_index\":0,\"group_override\":false,\"rules
\":null},{\"group_id\":\"TiDB_DDL_100117\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100119\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_
id\":\"TiDB_DDL_100121\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100123\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10
0125\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100127\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100129\",\"group_ind
ex\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10013\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100131\",\"group_index\":0,\"group_over
ride\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100133\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100135\",\"group_index\":0,\"group_override\":false,\"rul
es\":null},{\"group_id\":\"TiDB_DDL_100137\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100139\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"grou
p_id\":\"TiDB_DDL_100141\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100143\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_
100145\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100147\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100149\",\"group_i
ndex\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10015\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100151\",\"group_index\":0,\"group_ov
erride\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100153\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100155\",\"group_index\":0,\"group_override\":false,\"r
ules\":null},{\"group_id\":\"TiDB_DDL_100157\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100159\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"gr
oup_id\":\"TiDB_DDL_100161\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100163\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DD
L_100165\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100167\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100169\",\"group
_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_10017\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100171\",\"group_index\":0,\"group_
override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100173\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100175\",\"group_index\":0,\"group_override\":false,\
"rules\":null},{\"group_id\":\"TiDB_DDL_100177\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"group_id\":\"TiDB_DDL_100179\",\"group_index\":0,\"group_override\":false,\"rules\":null},{\"
...
```