Assume a multisite DB is ready for the platform

DB stages have been setup in WSUWP Environment that configure our multisite setup ahead of time. This relies on the proper configuration at the wp-config.php level as well.

In the future, it would be nice to find a way to use templating config files and include those with the WSUWP Environment repository as those are pretty specific to the environment and not necessarily the platform that we're building.

Basically this should all work from scratch when we're done.
Move multisite config to local-config and remote-config rather than wp-config
Update WordPress tracking commit