VOL-569: Create kubernetes deployment configuration for each voltha service

This update:
- organizes all Voltha components under their own namespace, "voltha". If
  you have a script for deploying Voltha, then add namespace.yml at the top.
- adds host volume mounts for Consul's data and config directories
- fixes a bug in Envoy where it was aborting because it couldn't find Consul
  even though it was getting the Voltha assignments from Etcd.

Change-Id: I45eaf2d65428c0184df06971ce3797b9122d3055
diff --git a/k8s/zookeeper.yml b/k8s/zookeeper.yml
index 3ef7b3d..2f3ceba 100644
--- a/k8s/zookeeper.yml
+++ b/k8s/zookeeper.yml
@@ -2,6 +2,7 @@
 kind: Service
 metadata:
   name: zoo1
+  namespace: voltha
 spec:
   clusterIP: None
   selector:
@@ -21,6 +22,7 @@
 kind: Service
 metadata:
   name: zoo2
+  namespace: voltha
 spec:
   clusterIP: None
   selector:
@@ -40,6 +42,7 @@
 kind: Service
 metadata:
   name: zoo3
+  namespace: voltha
 spec:
   clusterIP: None
   selector:
@@ -59,6 +62,7 @@
 kind: StatefulSet
 metadata:
   name: zookeeper1
+  namespace: voltha
 spec:
   serviceName: zoo1
   replicas: 1
@@ -96,6 +100,7 @@
 kind: StatefulSet
 metadata:
   name: zookeeper2
+  namespace: voltha
 spec:
   serviceName: zoo2
   replicas: 1
@@ -133,6 +138,7 @@
 kind: StatefulSet
 metadata:
   name: zookeeper3
+  namespace: voltha
 spec:
   serviceName: zoo3
   replicas: 1