hudctrl: Update for v0.2.0

Version 0.2.0 of the HUD Controller is stateful.  It requires writable
storage for its configuration file, as it updates the file when display
settings and screen URLs are changed.

While we're making changes, let's move it to its own namespace.

hudctrl/hudctrl.yaml

@@ -1,5 +1,29 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: hudctrl
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: hudctrl
+  namespace: hudctrl
+  labels:
+    app.kubernetes.io/component: hudctrl
+    app.kubernetes.io/name: hudctrl
+    app.kubernetes.io/instance: hudctrl
+    app.kubernetes.io/part-of: hudctrl
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Mi
+
+---
 apiVersion: apps/v1
-kind: Deployment
+kind: StatefulSet
 metadata:
   labels:
     app.kubernetes.io/component: hudctrl
@@ -7,7 +31,9 @@ metadata:
     app.kubernetes.io/instance: hudctrl
     app.kubernetes.io/part-of: hudctrl
   name: hudctrl
+  namespace: hudctrl
 spec:
+  serviceName: hudctrl
   selector:
     matchLabels:
       app.kubernetes.io/component: hudctrl
@@ -21,21 +47,21 @@ spec:
         app.kubernetes.io/instance: hudctrl
     spec:
       containers:
-      - image: registry.pyrocufflink.blue/hudctrl:latest
+      - image: git.pyrocufflink.blue/containerimages/hudctrl:latest
         name: hudctrl
         ports:
         - containerPort: 80
           name: http
         env:
-        - name: HUDCTRL_URLS_FILE
-          value: /run/hudctrl/config/urls.json
+        - name: HUDCTRL_CONFIG_PATH
+          value: /run/hudctrl/config.json
         volumeMounts:
-        - mountPath: /run/hudctrl/config
+        - mountPath: /run/hudctrl
           name: config-vol
       volumes:
       - name: config-vol
-        configMap:
-          name: hudctrl-urls
+        persistentVolumeClaim:
+          claimName: hudctrl
 
 ---
 apiVersion: v1
@@ -47,6 +73,7 @@ metadata:
     app.kubernetes.io/instance: hudctrl
     app.kubernetes.io/part-of: hudctrl
   name: hudctrl
+  namespace: hudctrl
 spec:
   ports:
   - port: 80
@@ -64,6 +91,7 @@ apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: hudctrl
+  namespace: hudctrl
   annotations:
     nginx.ingress.kubernetes.io/rewrite-target: /
 spec: