BSSAP_Types: Update VBS/VGCS messages to Release 15

Merged Harald Welte requested to merge hwelte/titan.ProtocolModules.BSSMAP_v11.2.0:vgcs into master

This includes primarily support for AoIP in the context of VBS/VGCS

Signed-off-by: Harald Welte laforge@gnumonks.org

Merge request reports