add container image checks in the test job

Change-Id: I0344445ac2e2873328e563e29d3c8f6b06e8a76c
diff --git a/Jenkinsfile-voltha-test b/Jenkinsfile-voltha-test
index 68013b8..5e2662f 100644
--- a/Jenkinsfile-voltha-test
+++ b/Jenkinsfile-voltha-test
@@ -38,6 +38,7 @@
                     screen -dmS voltha-api-minimal bash -c 'while true; do kubectl port-forward -n voltha service/voltha-api 55555:55555; done'
                     screen -dmS voltha-ssh kubectl port-forward -n voltha service/voltha-cli 5022:5022
                     export VOLTCONFIG=/home/cord/.volt/config
+                    kubectl get pods --all-namespaces -o jsonpath="{..image}" |tr -s "[[:space:]]" "\n" | sort | uniq -c
                     cd $WORKSPACE/voltha-system-tests/tests
                     robot --removekeywords wuks -d Log -V $WORKSPACE/${configBaseDir}/${configDeploymentDir}/${configFileName}.yaml -v POD_NAME:${configFileName} -v KUBERNETES_CONFIGS_DIR:$WORKSPACE/${configBaseDir}/${configKubernetesDir} functional/Voltha_PODTests.robot || true
                     """