Script updates for automated qa procedure

  Related-PROD: PROD-36856

Change-Id: Id470e4e39c7e8d18b34cd54facc1af906edde028
diff --git a/k8s/workspace/run-k8s-perf.sh b/k8s/workspace/run-k8s-perf.sh
index e46a1a5..c3cae14 100644
--- a/k8s/workspace/run-k8s-perf.sh
+++ b/k8s/workspace/run-k8s-perf.sh
@@ -14,6 +14,7 @@
         kubectl exec -n qa-space --stdin rally -- rally env list
 else
         echo "# Running k8s performance tests"
+        kubectl exec -n qa-space --stdin rally -- rally env use kubernetes
         kubectl exec -n qa-space --stdin rally -- rally task start /rally/rally-files/k8s-mos-scn-i100c5.yaml
 	# generate report
 	echo "# Generating report"