Bump onos version to include changes to INT app

Change-Id: I7a9616fc2d44faaa665bdb9776d0e190e40b5e08
diff --git a/Makefile.vars b/Makefile.vars
index d349916..75edaee 100644
--- a/Makefile.vars
+++ b/Makefile.vars
@@ -26,7 +26,7 @@
 # (2) Checkout Local source code (local branch not yet pushed);
 # (3) Fetch from Gerrit/Github (pending review in the form of refs/changes/... or pending pull request);
 
-export ONOS_VERSION            ?= 2.2.4
+export ONOS_VERSION            ?= 0f1ffd162f0a8fd2a12ac26f12b54519064c4a3b # onos-2.2 branch
 export TRELLIS_CONTROL_VERSION ?= 3.0.0
 export TRELLIS_T3_VERSION      ?= 3.0.0
 export FABRIC_TOFINO_VERSION   ?= e1cf4551b4ab74bb82a7cecf19d197698ffbc1cb