fix RUN_TEST typho

Change-Id: I8062067e6fec8be0ebf0f690e88d741eefe259e3
diff --git a/mk-k8s-simple-deploy-pipeline.groovy b/mk-k8s-simple-deploy-pipeline.groovy
index b85d98f..d48498b 100644
--- a/mk-k8s-simple-deploy-pipeline.groovy
+++ b/mk-k8s-simple-deploy-pipeline.groovy
@@ -81,7 +81,7 @@
         salt.installOpenstackMcpControl(saltMaster)
     }
 
-    if (RUN_TESTS == "1")
+    if (RUN_TESTS == "1") {
         stage("Run k8s conformance e2e tests") {
             salt.runConformanceTests(saltMaster, K8S_API_SERVER, CONFORMANCE_IMAGE)
         }