bbsim related fixes

jjb/pipeline/voltha/master/bbsim-tests.groovy
  o Remove self from installKind() call.
  o Jenkins script object pointer needed for passing but syntax {self,this,etc} not correct.

vars/iam.groovy
vars/installKind.groovy
-----------------------
  o Why do languages still support this snowflake condition ?!?
  o Remove comma separator from the final argument specified in a function declaration.
  o Simplified editing when removal of trailing delimiter is not a requirement.
  o Always code lines with delimiter results in no potential for a syntax error with edits.

Change-Id: I8989c1cf2e783ffc49a99f470a3484c3205fb254
diff --git a/vars/installKind.groovy b/vars/installKind.groovy
index 3638508..e22281b 100644
--- a/vars/installKind.groovy
+++ b/vars/installKind.groovy
@@ -64,7 +64,7 @@
 // -----------------------------------------------------------------------
 Boolean call\
     (
-    def self,  // jenkins env object for access to primitives like echo()
+    // def self,  // jenkins env object for access to primitives like echo()
     Closure body // jenkins closure attached to the call iam() {closure}
     )
 {