Merge pull request #575 from kbrock/postgres_config

Add postgres configuration to developer docs

Author: Fryguy

developer_setup.md

@@ -96,7 +96,19 @@ ManageIQ requires a memcached instance for session caching and a PostgreSQL data
 
  * macOS
 
- `brew` will configure the cluster automatically, but you will need to create the user.
+ `brew` will configure the cluster automatically, but you need to make a few tweaks
+ including granting access to the root user.
+
+ ```conf
+ # ${HOMEBREW_PREFIX}/var/postgresql@13/postgresql.conf
+ # right after authentication_timeout = 1min
+ # More secure and closer to production. (standard on pg 14+)
+ password_encryption = scram-sha-256
+ # needed for multi-region replication
+ wal_level = logical
+ # parallel testing requires more locks per transactions
+ max_locks_per_transaction = 128
+ ```
 
  ```bash
  brew services start postgresql@13