minor fixes to test_control_bus
minor fixes to test_control_bus

Very minor things I came across while working on related things.
Commit so we don't forget.

Change-Id: I3e7620e9d38ed881d0ce4d5c067ccfbe0c08d0f4

ramineni/my_congress,openstack/congress,ramineni/my_congress,openstack/congress,ramineni/my_congress,ramineni/my_congress