Bug-1180: Segment routing message parsers/serilizers

-added Segment Routing messages parsers/serializers
	-extends stateful07 message parsers and PcRepMessage parser
	-junit tests
-added parsers/serializers activator

Change-Id: I531b36cd0fc48a30fbfbe8b596a1faa0f1945fb0
Signed-off-by: Milos Fabian <milfabia@cisco.com>
Merge "Bug-1180: Segment routing message parsers/serilizers"