Fix notification being sent on success

Author: tiny-ben-tran

Jenkinsfile-SmokeTest

@@ -139,8 +139,7 @@ timestamps {
         echo "Exception was caught: ${e}"
         currentBuild.result = 'FAILURE'
       } finally {
-        echo "Current build result: ${currentBuild.result}"
-        if (currentBuild.result != 'SUCCESS') {
+        if (currentBuild.resultIsWorseOrEqualTo('UNSTABLE')) {
           def color = ['UNSTABLE': 'warning', 'FAILURE': 'danger']
           def message = currentBuild.result == 'UNSTABLE' ? "Tests failed" : 'An unexpected error occurred while running tests'