Bug 7607 : Bgp route not getting sync-up with fib

Bug 7607 : Bgp route not getting sync-up with fib

Problem:
ODL bgp route not getting sync-up with fib table

Analysis and Fix:
In BGPManger, configs are replayed to quagga in BGP reactor.
BGP reactor gets trigered whenever ebgp.yang data model gets added.
on configuring a VPN also ebgp gets added and replay is called. But no bgp
configs are there to replay. Now when BGP config is added later, no replay
will happen and routes will be missed
So moving the config replay to ASID reactor.

Change-Id: I1cef1415759267ebfe96ac9fbc28cf84b58577ed
Signed-off-by: Vyshakh Krishnan CH <vyshakh.krishnan.c.h@ericsson.com>