(VOL-4968) add uni and optional vlan args to the bbsim igmp keywords

Change-Id: I6f8d62855e6ef27acb6469b2628d5258216a566f
diff --git a/VERSION b/VERSION
index 56beced..dcb27a7 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.4
+2.12.5