Fix saltModelTesting.setupAndTestNode call's

   * setupAndTestNode function has been refectored, and now return
     true\false result. Otherwise, function result has not been checked.
   * Since setupAndTestNode now return answer, no sence to use retry on it-
     it's never throw expected exception.

Change-Id: I84ee45964151ebf3bae0f52fb25d5b7f60428d75
diff --git a/test-salt-model-node.groovy b/test-salt-model-node.groovy
index 694f048..9e72555 100644
--- a/test-salt-model-node.groovy
+++ b/test-salt-model-node.groovy
@@ -62,11 +62,11 @@
         stage("test node") {
           if (checkouted) {
             def workspace = common.getWorkspace()
+            def testResult = false
             common.infoMsg("Running salt model test for node ${NODE_TARGET} in cluster ${CLUSTER_NAME}")
             try {
               def DockerCName = "${env.JOB_NAME.toLowerCase()}_${env.BUILD_TAG.toLowerCase()}"
-
-              test_result = saltModelTesting.setupAndTestNode(
+              testResult = saltModelTesting.setupAndTestNode(
                   NODE_TARGET,
                   CLUSTER_NAME,
                   EXTRA_FORMULAS,
@@ -88,10 +88,10 @@
                 throw e
               }
             }
-            if (test_result) {
+            if (testResult) {
               common.infoMsg("Test finished: SUCCESS")
             } else {
-              common.warningMsg("Test finished: FAILURE")
+              error('Test finished: FAILURE')
               currentBuild.result = "FAILURE"
             }
           }