Add missing quote, added func banner()

Change-Id: I7d9f0df308ce858ed659bffa8ce985cfdc8f1c10
diff --git a/vars/volthaDeploy.groovy b/vars/volthaDeploy.groovy
index 1d83306..defcaf6 100644
--- a/vars/volthaDeploy.groovy
+++ b/vars/volthaDeploy.groovy
@@ -52,9 +52,12 @@
 // Intent: Display a message with visibility for logging
 // -----------------------------------------------------------------------
 String banner(String message) {
+    String iam = getIam('banner')
+
     println("""
 
 ** -----------------------------------------------------------------------
+** IAM: $iam
 ** ${message}
 ** -----------------------------------------------------------------------
 """)