VOL-4857 - add debugging

vars/installVoltctl.groovy
--------------------------
   o Display release vars in a single statement to avoid jenkins inserting 'echo' between each.

vars/setOnosLogLevels.groovy
vars/volthaDeploy.groovy
vars/volthaInfraDeploy.groovy
vars/volthaStackDeploy.groovy
-----------------------------
   o Added an ENTER/LEAVE printf to identify running script.
   o Consistent use of a shebang path.
   o Use pgrep to display port forwarding prior to termination
     + command pipeline can be shorted, let pgrep/pkill do heavy lifting.
   o Inlined temporary debugging to view output pipelines are acting on.
     + Debugging etcd:port=null and a few other anomolies.

Change-Id: I40d6b87519cd0fc84406a8a8a76f244da0096496
diff --git a/vars/waitForAdapters.groovy b/vars/waitForAdapters.groovy
index 14b8cdb..e8d0cb7 100644
--- a/vars/waitForAdapters.groovy
+++ b/vars/waitForAdapters.groovy
@@ -1,5 +1,10 @@
+#!/usr/bin/env groovy
+
 def call(Map config) {
 
+    String iam = 'vars/waitForAdapters.groovy'
+    println("** ${iam}: ENTER")
+
     def defaultConfig = [
         volthaNamespace: "voltha",
         stackName: "voltha",
@@ -74,6 +79,10 @@
 
     sh """
       set +x
+      pgrep --list-all port-forw
+
       ps aux | grep port-forw | grep -v grep | awk '{print \$2}' | xargs --no-run-if-empty kill -9 || true
     """
+
+    println("** ${iam}: LEAVE")
 }