support cpu_quotas and cpu_peroid in host qos

Change-Id: I9a0d69c92af62eaa105b34eda1d824053ddb310e

Conflicts:
	novaclient/v1_1/host_servers_qos.py
Support pin vcpu to host cpu

Change-Id: Ia08a53b6d8325a03af37d328ad534da1f90d70f7