FIX/ONE: Bug #2281: Fix DS monitoring parse error crash
FIX/ONE: feature #2262: fix default substitution

Conflicts:
	src/datastore_mad/remotes/iscsi/monitor
	src/datastore_mad/remotes/lvm/monitor
adopted to 4.2.0 lvm and iscsi monitor
ENH/jhr: adopt lvm to work as replacement for env previously with gfs2clvm
ENH/jhr: dynamicaly guess remote lvm management host
ENH/jhr: cpu overcommit, hardcoded multiplier suitable for production env
ENH/jhr: mem overcommit, hardcoded multiplier suitable for production env
ENH/jhr: freeze machine capability to rhel6.2.0 to be consistent during upgrades
ENH/jhr: set cgroups cpu shares to number of vcpus
ENH/jhr: remove kvm memory state file after vm resume
FIX/jhr: use only one way to get total_memory, use the virsh nodeinfo data, not free command
ENH/jhr: preconfigure vnc_proxy_path for susnstone
ENH/jhr: when onehost has state "update" try to get lvm mgmt host again