CLOUD-783 - Cleanup test cluster before deletion (#359)

Author: tplavcic

Jenkinsfile

@@ -36,6 +36,15 @@ void shutdownCluster(String CLUSTER_SUFFIX) {
             source $HOME/google-cloud-sdk/path.bash.inc
             gcloud auth activate-service-account --key-file $CLIENT_SECRET_FILE
             gcloud config set project $GCP_PROJECT
+            for namespace in \$(kubectl get namespaces --no-headers | awk '{print \$1}' | grep -vE "^kube-|^openshift" | sed '/-operator/ s/^/1-/' | sort | sed 's/^1-//'); do
+                kubectl delete deployments --all -n \$namespace --force --grace-period=0 || true
+                kubectl delete sts --all -n \$namespace --force --grace-period=0 || true
+                kubectl delete replicasets --all -n \$namespace --force --grace-period=0 || true
+                kubectl delete poddisruptionbudget --all -n \$namespace --force --grace-period=0 || true
+                kubectl delete services --all -n \$namespace --force --grace-period=0 || true
+                kubectl delete pods --all -n \$namespace --force --grace-period=0 || true
+            done
+            kubectl get svc --all-namespaces || true
             gcloud container clusters delete --zone $GKERegion $CLUSTER_NAME-${CLUSTER_SUFFIX}
         """
    }