VOL-570 : Change network type used by voltha components

- Updated from weave to calico which is the default network type
- Updated ponsim README file
- Removed deprecated data folder

Amendments:

- Change to specific version of kafka/zookeeper
- Added annotations statement to netconf manifest

Change-Id: Ibc8c06f037c275717b5c79b60443b7fd11545405
diff --git a/k8s/netconf.yml b/k8s/netconf.yml
index 82f5022..9bb7e67 100644
--- a/k8s/netconf.yml
+++ b/k8s/netconf.yml
@@ -22,6 +22,8 @@
     metadata:
       labels:
         app: netconf
+      annotations:
+        cni: "calico"
     spec:
       terminationGracePeriodSeconds: 10
       affinity: