Description of problem: Version-Release number of selected component (if applicable): 5.7.0.17.20161219135818_725f92f How reproducible: Steps to Reproduce: 1. Create a stack for ec2 or openstack.Do not select provider. 2. Catalog item can still be created. 3. But stack provisioning request fails. Actual results: Expected results: Selecting provider should be made mandatory Additional info: