Fix memory leak on deletion of BD (bridge domain)
Fix memory leak on deletion of BD (bridge domain)

On BD deletion, free memory used by members vector and mac_by_ip4
and mac_by_ip6 hash tables.

Change-Id: Ied467e79bb6636fd8788bdeddee660c66391bb7e
Signed-off-by: John Lo <e676165d137051a9de0d8979abbff6c5d0ccb4f0@cisco.com>

vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp