Accept routes with no encap specified in bare MPLS mode
Accept routes with no encap specified in bare MPLS mode

In bare MPLS mode, we need the MPLS OVS dataplane to advertise
the fact that routes with no encap specified should be accepted.

openstack/networking-bagpipe-l2,openstack/networking-bagpipe,openstack/networking-bagpipe,stackforge/networking-bagpipe-l2,openstack/networking-bagpipe-l2,stackforge/networking-bagpipe-l2