test for GPMONGODB-304
fix for GPMONGODB-172 "Unable to query domain class with ObjectId field in tests"
fix for GPMONGODB-212 "Default to use replicaSet instead of host/port when it is defined"
fix for GPMONGODB-228 "Ability to switch mongo database mapping on the fly"
more mongodb plugin docs covering switching database/collection at runtime
Merge branch '1.x'