When resuming services exclude those managed by hacluster, in
this case haproxy. If pacemaker lacks quorum it may shut haproxy
down which will cause this charm to error.
Charmhelper sync included to bring in required
get_managed_services_and_ports method.
Currently, Apache ports.conf file is not being configured by this
charm. This patch changes the ports.conf default file with another one
that does not open port 80 on SSL environments.
The appendix in the deploy-guide has recently been
refreshed. This is the sixth of the nine charms that
support overrides to receive a streamlining in order
to cut down on duplication.