Right now Wikitech runs on wmcs-managed systems in isolation from the main MediaWiki hosting cluster. This "snowflake" deployment leads to both confusion for other MediaWiki support teams and reduced functionality for Wikitech as a wiki.
Now that Wikitech doesn't involve any OpenStack API integration, it can and should move to the standard production wiki cluster.
Note that this does not mean that Wikitech will become an SUL wiki; that will happen later. Wikitech will still create, manage, and consume ldap credentials.