zebra: IPv6 MP-BGP Routes addition and deletion

This patch contains the following:
1. Addition of IPv6 SAFI_MULTICAST BGP routes into the RTM's RIB.
2. Deletion of IPv6 SAFI_MULTICAST BGP routes from the RTM's RIB.
diff --git a/zebra/connected.c b/zebra/connected.c
index 8db2d36..f699b14 100644
--- a/zebra/connected.c
+++ b/zebra/connected.c
@@ -343,7 +343,7 @@
 #endif
 
   rib_add_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, RT_TABLE_MAIN,
-                ifp->metric, 0);
+                ifp->metric, 0, SAFI_UNICAST);
 
   rib_update ();
 }
@@ -417,7 +417,7 @@
   if (IN6_IS_ADDR_UNSPECIFIED (&p.prefix))
     return;
 
-  rib_delete_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0);
+  rib_delete_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0, SAFI_UNICAST);
 
   rib_update ();
 }