BGP VPN: configure BaGPipe service for bagpipe driver

BaGPipe driver for BGP VPN relies on the use of the bagpipe-bgp
BGP VPN implementation on compute nodes and the MPLS implementation
in OpenVSwitch.

Change-Id: Iebadbafcace34e78001ed4d910a618de1e6ac90f
Related-Prod: PROD-17949
5 files changed