add support for hugepages to nova flavors
add support for hugepages to nova flavors

Nova flavors need to be properly configured to use hugepages
backed memory. This patch performs flavors configuration on plugin startup

Change-Id: I05da7e7069e63c07d47c8996326df8ca53536811

stackforge/networking-6wind,stackforge/networking-6wind,openstack/networking-6wind,openstack/networking-6wind