Multiple tasks (OMS-296, OMS-258, OMS-363)

* 20c682f (origin/oms-296, oms-296) Implement auto-creation of VirtualizationContainer instances
* b6afcf3 (origin/oms-258, oms-258) Implement HN use in allocation blacklisting support (OMS-258
* b431910 (origin/oms-363, oms-363) Implement stopvms command (OMS-363)