BSSGP_Emulation: Introduce MGMT port to per-BVC component

This port can (optionally) be connected to, and it will receive
state change notifications as well as permit the user to block/unblock
and reset the specific PTP BVC.

Change-Id: I1f0289c8805168e3daace4a7d76764b45cead3d0
1 file changed