Move policy checks to calling side of rpc.

This prepares to move some of the functionality in the manager
up to the api. We previously did policy checking on the manager
side because quantum v1 was a manager. Now that quantum replaces
the api, we can do the policy checking on the api side.

Change-Id: Id404c66e61044b880dbfb11f7cbba20cbab4b527
VMware Compute Driver Networking

blueprint vmware-compute-driver

VLAN & Quantum integration
DocImpact

Nova conf:
[vmware]
integration_bridge=Name of integration bridge, defaults to 'br-int'

Change-Id: Ib56b8a49773b933be82de04576deb832ef89a0bd
Merge "VMware Compute Driver Networking"
Merge "Move policy checks to calling side of rpc."