fix checkup method exit condition

Jenkinsfile

@@ -340,6 +340,9 @@ def deployJobs(def serviceList){
             catchError(buildResult: 'UNSTABLE', stageResult: 'UNSTABLE') {
                 checkup(service[0], service[ 1 ], service[2]);
            }
+            if (currentBuild.result == "UNSTABLE") {
+                return;
+            }
             catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                 deploy(service[0], service[ 1 ], service[2]);
            }