Adds spec for Hyper-V memory metrics collection
Adds spec for Hyper-V memory metrics collection

https://blueprints.launchpad.net/ceilometer/+spec/hyper-v-memory-metrics

Change-Id: I11e9ed92ff2aa72f5fe440dd1e9ac79f8409deb3

openstack/ceilometer-specs,openstack/telemetry-specs