[VOL-5100] - periodic-voltha-test-bbsim

vars/getVolthaImageFlags.groovy
-------------------------------
  o npm-groovy-lint cleanups, change double to single quotes.
  o Changed return type from def to String so groovy string joins
    cannot incorrectly cast types while joining strings with plus.
  o [DEBUG] hudson.remoting.ProxyException: groovy.lang.MissingMethodException:
    - No signature of method: java.lang.String.positive() is applicable for
    - argument types: () values: []

Change-Id: I9e5a418cd1ab8efcaf52240787a00a415f3b882a
diff --git a/jjb/pipeline/voltha/master/bbsim-tests.groovy b/jjb/pipeline/voltha/master/bbsim-tests.groovy
index 3943571..4df9a78 100644
--- a/jjb/pipeline/voltha/master/bbsim-tests.groovy
+++ b/jjb/pipeline/voltha/master/bbsim-tests.groovy
@@ -173,6 +173,8 @@
 			testSpecificHelmFlags
 		    ].join(' ')
 
+		    println("** localHelmFlags = ${localHelmFlags}")
+
 		    if (gerritProject != '') {
 			localHelmFlags = "${localHelmFlags} " + getVolthaImageFlags("${gerritProject}")
 		    }