VOL-1406: Deploy voltha 2.0 in a k8s cluster

- Also added sleep to watching rw-core to ensure that the
  watching core does not respond to a request before the
  core that seized it.

Change-Id: I9998975b6dda42b3bd58112115c5122bf2b49d42
diff --git a/k8s/zookeeper.yml b/k8s/zookeeper.yml
new file mode 100644
index 0000000..5760f0d
--- /dev/null
+++ b/k8s/zookeeper.yml
@@ -0,0 +1,196 @@
+# Copyright 2019-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: zoo1
+  namespace: voltha
+spec:
+  clusterIP: None
+  selector:
+    app: zookeeper-1
+  ports:
+  - name: client
+    port: 2181
+    targetPort: 2181
+  - name: follower
+    port: 2888
+    targetPort: 2888
+  - name: leader
+    port: 3888
+    targetPort: 3888
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: zoo2
+  namespace: voltha
+spec:
+  clusterIP: None
+  selector:
+    app: zookeeper-2
+  ports:
+  - name: client
+    port: 2181
+    targetPort: 2181
+  - name: follower
+    port: 2888
+    targetPort: 2888
+  - name: leader
+    port: 3888
+    targetPort: 3888
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: zoo3
+  namespace: voltha
+spec:
+  clusterIP: None
+  selector:
+    app: zookeeper-3
+  ports:
+  - name: client
+    port: 2181
+    targetPort: 2181
+  - name: follower
+    port: 2888
+    targetPort: 2888
+  - name: leader
+    port: 3888
+    targetPort: 3888
+---
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: zookeeper1
+  namespace: voltha
+spec:
+  serviceName: zoo1
+  replicas: 1
+  updateStrategy:
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: zookeeper-1
+  template:
+    metadata:
+      labels:
+        app: zookeeper-1
+      annotations:
+        cni: "calico"
+    spec:
+      terminationGracePeriodSeconds: 0
+      containers:
+      - name: zoo1
+        image: zookeeper:3.4.11
+        ports:
+        - containerPort: 2181
+        - containerPort: 2888
+        - containerPort: 3888
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: ZOO_MY_ID
+          value: "1"
+        - name: ZOO_SERVERS
+          value: >
+            server.1=zookeeper1-0.zoo1.$(NAMESPACE).svc.cluster.local:2888:3888
+            server.2=zookeeper2-0.zoo2.$(NAMESPACE).svc.cluster.local:2888:3888
+            server.3=zookeeper3-0.zoo3.$(NAMESPACE).svc.cluster.local:2888:3888
+---
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: zookeeper2
+  namespace: voltha
+spec:
+  serviceName: zoo2
+  replicas: 1
+  updateStrategy:
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: zookeeper-2
+  template:
+    metadata:
+      labels:
+        app: zookeeper-2
+      annotations:
+        cni: "calico"
+    spec:
+      terminationGracePeriodSeconds: 0
+      containers:
+      - name: zoo2
+        image: zookeeper:3.4.11
+        ports:
+        - containerPort: 2181
+        - containerPort: 2888
+        - containerPort: 3888
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: ZOO_MY_ID
+          value: "2"
+        - name: ZOO_SERVERS
+          value: >
+            server.1=zookeeper1-0.zoo1.$(NAMESPACE).svc.cluster.local:2888:3888
+            server.2=zookeeper2-0.zoo2.$(NAMESPACE).svc.cluster.local:2888:3888
+            server.3=zookeeper3-0.zoo3.$(NAMESPACE).svc.cluster.local:2888:3888
+---
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: zookeeper3
+  namespace: voltha
+spec:
+  serviceName: zoo3
+  replicas: 1
+  updateStrategy:
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: zookeeper-3
+  template:
+    metadata:
+      labels:
+        app: zookeeper-3
+      annotations:
+        cni: "calico"
+    spec:
+      terminationGracePeriodSeconds: 0
+      containers:
+      - name: zoo3
+        image: zookeeper:3.4.11
+        ports:
+        - containerPort: 2181
+        - containerPort: 2888
+        - containerPort: 3888
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: ZOO_MY_ID
+          value: "3"
+        - name: ZOO_SERVERS
+          value: >
+            server.1=zookeeper1-0.zoo1.$(NAMESPACE).svc.cluster.local:2888:3888
+            server.2=zookeeper2-0.zoo2.$(NAMESPACE).svc.cluster.local:2888:3888
+            server.3=zookeeper3-0.zoo3.$(NAMESPACE).svc.cluster.local:2888:3888