[CentOS-7] Migrate to content provider jobs/templates

Depends-On: https://review.opendev.org/#/c/759985

Change-Id: I62b71cff60912ab2fddc82372b06a2bbf7ce5cb9
Signed-off-by: Chandan Kumar (raukadah) <chkumar@redhat.com>

zuul.d/layout.yaml

@@ -1,7 +1,7 @@
 - project:
     templates:
       - tripleo-multinode-baremetal-minimal
-      - tripleo-multinode-container-minimal
+      - tripleo-multinode-container-minimal-pipeline
       - check-requirements
       - openstack-python-jobs
       - openstack-python35-jobs