Major Description
We should change our build setup such that all tests of the upper layers (oak-core, oak-jcr) can be run against either of the Microkernels. AFAIK currently they are always run against the default Microkernel and not against the MongoDB based Microkernel. Even though when the building with the mongomk profile.
Also the integration testing profile should be changed such, that it runs all against all Microkernel implementations. We need to figure out how we can do that with the MongoDB based Microkernel since due to licensing issues I think we can't just embed MongoDB.