Creating cluter w/o cluster template fixed
Creating cluter w/o cluster template fixed

Now user will recieve an error message, saying that Cluster
could not be created w/o node groups.

Fixes bug 1200601

Change-Id: If97c561c6e5771eb8d84edf0b468ddd475ff6e98

openstack/sahara-dashboard,openstack/sahara-dashboard,openstack/sahara-dashboard,openstack/sahara-dashboard