Introducing karaf-parent (and also group karaf things)

This patch introduces karaf-parent (to ease in the making
of karaf distributions) and moves all the karaf things into
a common directory.

Change-Id: I75e58d92a06104274eff3c71e3c6de4db2e29e47
Signed-off-by: Ed Warnicke <eaw@cisco.com>
Merge "Introducing karaf-parent (and also group karaf things)"