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

This update:
- renames all voltha images referenced in kubernetes deployment files
  to the 'voltha-<component>' format
- adds the kubernetes deployment files for grafana, dashd, and shovel
- adds deployment files for an Ingress resource and an nginx-based ingress
  controller to allow access to the Consul and Grafana UIs from outside
  the cluster

Manifest file ingress/05-namespace.yml sets up a namespace 'ingress-nginx'
for all ingress-related resources. This file will be deleted once we move
all voltha components, including ingress, to a 'voltha' namespace.

Deployment instructions for the ingress resources are provided in README.md.

Change-Id: I0459e838318c43e21f40e83b314f77fc9e0456f8
diff --git a/k8s/fluentd.yml b/k8s/fluentd.yml
index 5b535e1..1a7ec0f 100644
--- a/k8s/fluentd.yml
+++ b/k8s/fluentd.yml
@@ -46,7 +46,7 @@
             topologyKey: kubernetes.io/hostname
       containers:
       - name: fluentdactv
-        image: cord/fluentd
+        image: voltha-fluentd
         imagePullPolicy: Never
         volumeMounts:
         - name: fluentd-log
@@ -106,7 +106,7 @@
             topologyKey: kubernetes.io/hostname
       containers:
       - name: fluentdstby
-        image: cord/fluentd
+        image: voltha-fluentd
         imagePullPolicy: Never
         volumeMounts:
         - name: fluentd-log
@@ -162,7 +162,7 @@
             topologyKey: kubernetes.io/hostname
       containers:
       - name: fluentd
-        image: cord/fluentd
+        image: voltha-fluentd
         imagePullPolicy: Never
         ports:
         - containerPort: 24224