Optimize the checks of container for create action
Optimize the checks of container for create action

Make the checks of container more correct for create action.

Change-Id: If1bdb46e2c76db69ff5301fa5439c8ae4f87bca5
Closes-Bug: #1662190

openstack/freezer-web-ui,openstack/freezer-web-ui,openstack/freezer-web-ui,openstack/freezer-web-ui