`LmcUser\Db\Adapter\MasterSlaveAdapter` has the wrong namespace

### Bug Report

| Q              | A      |
|------------|-------|
| Version(s) | 3.7.0  |

#### Summary

The namespace of `LmcUser\Db\Adapter\MasterSlaveAdapter` is set to `ZfcBase\Db\Adapter`.

It should be `LmcUser\Db\Adapter`

The fact that no one reported this in the last 4 years, is an indication that it must not be used...