Adding usage of floating ip when quantum is used

- when quantum is used created instaces get floating ip
- when quantum is used instances are tested via floating ip
- fix of sourcing path of grizzly2havana-pieces
Making upgrade test work with quantum

- Modified service_control to work with neutron
  (Neutron services don't contain openstack- prefix)
Merge pull request #4 from cubeek/master

Adding usage of floating ip when quantum is used