[FABRIC-411} Throw IllegalArgumentException instead of NPE, when upgrading / rollinng back non existent containers.
[FABRIC-416] Added karaf standard feature repo to mq-base profile.
[FABRIC-405][FABRIC-387] Fix broken metadata request in fabric maven proxy. Fix downloading of timestampted snapshot artifacts. Add settings.xml and http proxy support to fabric-maven-proxy. Add https wagon. Align versions.