[cern] Missing root-ca-file parameter for proper service account support
cherry-pick: https://review.openstack.org/#/c/436558/
Change-Id: I8d581b1fbffdb4b8bc64457da6faae6d45dfc594 Closes-Bug: 1666599
cherry-pick: https://review.openstack.org/#/c/436558/
Change-Id: I8d581b1fbffdb4b8bc64457da6faae6d45dfc594 Closes-Bug: 1666599