Notification listener processes only keystone project delete events.
It uses keystone project id to identify if related barbican resources are there
and deletes that project related barbican resources.
10/07/2014: Keep resolving rebase conflicts as this change is pending for a while.
Modified listener transaction logic as per related recent change in barbican.
Fixed missing patcher stop in few places which was causing failure in new tests.
Implements: blueprint consume-keystone-events
Change-Id: Iba7d50eb222edd43352ef82f629df2b3187c76ec
758904848f