Katello fields are not inherited properly
Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1348248
Description of problem:
Katello fields on host form (lifecycle_environment and content_view) are not inherited properly when provisioning a host from discovery.
Steps to Reproduce:
1. Go to Hosts -> Discovered
2. Click on "Provision" button for one of the hosts
3. Select a hostgroup with CV or Lifecycle environment set
4. Click on "Create host"
Katello fields are empty on host's form
Katello fields are successfully inherited from hostgroup.