Add post_upgrade_task and remove puppet-ceph pkg
Add post_upgrade_task and remove puppet-ceph pkg

This change adds a post_upgrade used to remove the
puppet-ceph package which is no longer required.
No ceph components depend on it, so it should be
removed from the system.

Change-Id: I9cd63ee34dfd964f18a33043980703660b0a55d7

openstack/tripleo-heat-templates,openstack/tripleo-heat-templates