Updated Voltctl Version for voltha-2.8 release jobs
Updated Physical Pod pipelines to use correct pod-configs branch

Change-Id: I6041f9f5d3094283aa01dec5cdd4f0ac081df170
diff --git a/jjb/pipeline/voltha/voltha-2.8/device-management-mock-tests.groovy b/jjb/pipeline/voltha/voltha-2.8/device-management-mock-tests.groovy
index 8a15ac6..10263dd 100644
--- a/jjb/pipeline/voltha/voltha-2.8/device-management-mock-tests.groovy
+++ b/jjb/pipeline/voltha/voltha-2.8/device-management-mock-tests.groovy
@@ -73,7 +73,7 @@
     }
     stage('Create K8s Cluster') {
       steps {
-        createKubernetesCluster([nodes: 3])
+        createKubernetesCluster([branch: "${branch}", nodes: 3])
       }
     }
     stage('Load image in kind nodes') {