Disallow non-admin to specify binding:profile

Change-Id: Iefa4b251f3b0a373fb9b2b7d576e14d58afece59
Fixes-Bug: #1214873
Implement MidoNet Neutron plugin for Havana

Implement L2, L3, security groups, metadata server support for
MidoNet Neutron plugin for Havana.

blueprint https://blueprints.launchpad.net/neutron/+spec/midonet-plugin-havana

Change-Id: I0dd1a2ca17d760443c4c7a464a66b6d0a2cf194a