Expose replica/slave DB connection info

[iamEAP]

I've got a use-case where I'd like to have programmatic access to replica database connection details: tableau-mkt/pantheon-mysql-proxy#4.

In an ideal world, if a replica is enabled for a site/environment, it would just show up as another field (or fields) in the terminus site connection-info command, for example:

# Would print details to the slave DB
terminus site connection-info --site=$PSITE --env=live --field="mysql_slave_command"

# Would include info/keys for the replica
terminus site connection-info --site=$PSITE --env=live

+----------------------+-------------------------------------------------------------------------------------------+
| Key                  | Value                                                                                     |
+----------------------+-------------------------------------------------------------------------------------------+
| Mysql Host           | dbserver.live.UUID.drush.in                                                               |
| Mysql Username       | pantheon                                                                                  |
| Mysql Password       | b4tt3ryh0rs3st@pl3                                                                        |
| Mysql Port           | 13370                                                                                     |
| Mysql Database       | pantheon                                                                                  |
| Mysql Url            | mysql://pantheon:{uuid}@dbserver.live.{uuid}.drush.in:13370/pantheon                      |
| Mysql Command        | mysql -u pantheon -pb4tt3ryh0rs3st@pl3 -h dbserver.live.{uuid}.drush.in -P 13370 pantheon |
| Mysql Slave Host     | 111.111.111.111                                                                           |
| Mysql Slave Username | pantheon                                                                                  |
| Mysql Slave Password | b4tt3ryh0rs3st@pl3                                                                        |
| Mysql Slave Port     | 13371                                                                                     |
| Mysql Slave Database | pantheon                                                                                  |
| Mysql Slave Url      | mysql://pantheon:111.111.111.111:13371/pantheon                                           |
| Mysql Slave Command  | mysql -u pantheon -pb4tt3ryh0rs3st@pl3 -h 111.111.111.111 -P 13371 pantheon               |
+----------------+-------------------------------------------------------------------------------------------------+

Is there appetite to have this included in terminus core, or would you recommend getting at this via a plugin?

[iamEAP]

I built this out as a plugin here: https://github.com/tableau-mkt/terminus-replica