Change default pullPolicy to Always

Change-Id: I46e8bc9cbd46a42de34ccea82d29d7f95ed00b3d
Issue-ID: INT-381
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/deployment/heat/onap-oom/env/gwu/onap.env b/deployment/heat/onap-oom/env/gwu/onap.env
index c510eb4..b17b990 100644
--- a/deployment/heat/onap-oom/env/gwu/onap.env
+++ b/deployment/heat/onap-oom/env/gwu/onap.env
@@ -15,7 +15,7 @@
   integration_override_yaml: >
     global:
       repository: 192.168.1.51:5000
-      pullPolicy: IfNotPresent
+      pullPolicy: Always
     robot:
       openStackKeyStoneUrl: "http://192.168.1.11:5000"
       openStackPublicNetId: "024582bd-ef9b-48b9-9e70-e6732559d9df"