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/olt.yml b/k8s/olt.yml
index 88925ec..cd64d51 100644
--- a/k8s/olt.yml
+++ b/k8s/olt.yml
@@ -25,7 +25,7 @@
        labels:
          app: olt
        annotations:
-         cni: "weave"
+         cni: "calico"
      spec:
        containers:
          - name: olt