Using global for images on all master pods and cleaning up unused files

Change-Id: I51deccd5270d874f4a34756bbce02c13364f0ce2
diff --git a/kubernetes-configs/voltha/onf-soak-pod.yml b/kubernetes-configs/voltha/onf-soak-pod.yml
index 30bb804..9b5ce05 100644
--- a/kubernetes-configs/voltha/onf-soak-pod.yml
+++ b/kubernetes-configs/voltha/onf-soak-pod.yml
@@ -15,7 +15,7 @@
 
 # Automated deployment configuration for ONF DEMO POD, olt/onu are connected to this
 
-defaults:
+global:
   image_tag: master
   image_pullPolicy: Always