Provide a Galleon-based separation of rapidly evolving MP items

The MP specs evolve more rapidly than the traditional EE ones do, possibly in incompatible ways. So, I'd like to be able to provide a galleon pack that doesn't include the MP artifacts and config items, with the exception of the observability ones that are a core part of our OpenShift feature set. This will allow users to strictly limit their installations to things less likely to have incompatible changes in later releases.