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/grafana.yml b/k8s/grafana.yml
index 10997b8..284cbd6 100644
--- a/k8s/grafana.yml
+++ b/k8s/grafana.yml
@@ -43,6 +43,8 @@
     metadata:
       labels:
         app: grafana
+      annotations:
+        cni: "calico"
     spec:
       containers:
       - name: grafana