Running a dolt sql server as a primary and a replica on the same instance causes read-only issues

Setup the directories and configs:

```bash
mkdir replication_test
cd replication_test
mkdir primary
mkdir standby1
echo 'log_level: info
max_logged_query_len: 2048
behavior:
read_only: false
autocommit: true
persistence_behavior: load
disable_client_multi_statements: true
user:
name: test
password: test
listener:
host: 0.0.0.0
port: 3306
databases: []
performance:
query_parallelism: 2
metrics:
labels:
process: dolt_sql_server
host: 127.0.0.1
port: 8888
cluster:
standby_remotes:
- name: standby1
remote_url_template: http://127.0.0.1:50052/{database}
bootstrap_role: primary
bootstrap_epoch: 1
remotesapi:
address: 0.0.0.0
port: 50051' > primary/config.yaml
echo 'log_level: info
max_logged_query_len: 2048
behavior:
read_only: false
autocommit: true
persistence_behavior: load
disable_client_multi_statements: true
user:
name: test
password: test
listener:
host: 0.0.0.0
port: 3307
databases: []
performance:
query_parallelism: 2
metrics:
labels:
process: dolt_sql_server
host: 127.0.0.1
port: 8889
cluster:
standby_remotes:
- name: primary
remote_url_template: http://127.0.0.1:50051/{database}
bootstrap_role: standby
bootstrap_epoch: 1
remotesapi:
address: 0.0.0.0
port: 50052' > standby1/config.yaml
```

Then in two separate terminal windows with one in the primary directory and one in the standby1 directory run `dolt sql-server --config config.yaml`
In a third terminal window connect to the primary and try to create a database and table:

```
~>mysql -h127.0.0.1 -p3306 -utest -ptest
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.7.9-Vitess

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MySQL [(none)]> create database db;
Query OK, 1 row affected (0.063 sec)

MySQL [(none)]> use db;
Database changed
MySQL [db]> create table t (
-> pk int primary key,
-> c1 varchar(8));
ERROR 1105 (HY000): Database db is read-only.
```

If you log into standby1 instead of primary you will now see that the empty database "db" was replicated.

I don't know if I have a config issue, but even if I do the behavior is not great.