Add TTL option for NettyPerfClient

Nobody has claimed this yet.

NettyPerfClient is a Netty based tool to generate PUT/GET traffic to frontend.

CLI to run this tool:
```
java -Dlog4j.configuration=file:../config/log4j.properties -cp ambry.jar com.github.ambry.tools.perf.rest.NettyPerfClient --hosts localhost --port 1174 --requestType POST --concurrency 10 --postBlobTotalSize 100 --postBlobChunkSize 100 --targetAccountName ambry_hadoop_test_account --targetContainerName ambry_hadoop_test_cntr
```

The tool is lack of a TTL option, without it all blob PUT to ambry is infinity. We want to have an option for Blob TTL when issue a command.

Core change:
NettyPerfClient:
```
private void reset() {
if (chunk != null) {
chunkedInput = new HttpChunkedInput(new RepeatedBytesInput());
request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST, path);
HttpUtil.setContentLength(request, totalSize);
request.headers().add(RestUtils.Headers.BLOB_SIZE, totalSize);
request.headers().add(RestUtils.Headers.SERVICE_ID, serviceId);
request.headers().add(RestUtils.Headers.AMBRY_CONTENT_TYPE, "application/octet-stream");
request.headers().add(RestUtils.Headers.TARGET_ACCOUNT_NAME, targetAccountName);
request.headers().add(RestUtils.Headers.TARGET_CONTAINER_NAME, targetContainerName);
++ request.headers().add(RestUtils.Headers.TTL, 86400); // make 86400 configureable. a.k.a pass in from CLI.
} else {
```

Search for NettyPerfClient and its reset() method, then inspect how the existing CLI options are parsed. Done means the command accepts a configurable TTL and applies that value to the blob PUT request instead of the hard-coded 86400.

Written by the indexing model from the issue text.