Default gerrit version to 3.6.3

Gerrit version 3.2 is EOL

Change-Id: I6e5b9539debb25ed697e1c3ed9c3e8b7969d40fc
diff --git a/common.env b/common.env
index 09181cc..023ab35 100644
--- a/common.env
+++ b/common.env
@@ -4,12 +4,15 @@
 CLUSTER_KEYS=$(AWS_PREFIX)-cluster-keys
 
 # Gerrit version
-GERRIT_VERSION=3.2
+GERRIT_VERSION=3.6
 GERRIT_PATCH=3
 GERRIT_BRANCH=stable-$(GERRIT_VERSION)
 
 # Multi-site
-EVENTSBROKER_LIB_VER=3.2.0-rc4
+EVENTSBROKER_LIB_VER=3.6.3
+
+# High-availability
+GLOBALREFDB_LIB_VER=3.6.3
 
 # Gerrit CI
 GERRIT_CI=https://gerrit-ci.gerritforge.com/view/Plugins-$(GERRIT_BRANCH)/job