[CLDMGMT-490] enable sherlock pubslisher in ceilometer-pulgin
	      VM pollster, based on VM instance UUID to fetch metrics instead of instance name.
	      Under nova cell mode, instance name is not consistent ID to specify same VM for nova parent nova cell & compute node.

Change-Id: I9f1b7393f4ca8eca501130843ddc1efcbe20cdea
add hypervisor metrics -- hypervisor.memory.usage and hypervisor.memory.usage.rate

Change-Id: I238cbd35481bef21be9d2ed309be78cf3931eddc
add hardware pollseters

Change-Id: Ic4d2d00a4ffbe467a38ddad0d633b7cd91e80048