Fix edit override when no hostgroup is currently selected

When a host doesn't have a hostgroup already selected, the edit override
for the openstack hostgroups throws an error.
added quickstack::firewall::ceph_osd to ceph storage node for BZ#1156184
Merge pull request #366 from sseago/ceph-ports

added quickstack::firewall::ceph_osd to ceph storage node for BZ#1156184
Merge pull request #362 from bcrochet/edit-host-hg

Fix edit override when no hostgroup is currently selected