Also remove clvmd and cmirrord initscripts in favour of new
"clvm" resource that is part of resource-agents package.
Provide new lvm2-cluster-standalone and cmirror-standlone
subpackages for standalone clvmd/cmirrord management without
cluster resource manager involvement (the new subpackages provide
lvm2-cluster-activation.service, lvm2-clvmd.service and
lvm2-cmirrord.service native systemd units).
