Add configurable podAnnotations to unifi chart (#9833)

Use case is using `ark` + `restic` to take backups which requires pods
with persistent data to be annotated like:
```
kubectl annotate pod unifi-55f6dcc44c-khbrk backup.ark.heptio.com/backup-volumes=unifi-data
```

Signed-off-by: Lyle Franklin <lylejfranklin@gmail.com>

charts/unifi/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: 5.9.29
 description: Ubiquiti Network's Unifi Controller
 name: unifi
-version: 0.2.1
+version: 0.2.2
 keywords:
   - ubiquiti
   - unifi

charts/unifi/README.md

@@ -88,6 +88,7 @@ The following tables lists the configurable parameters of the Sentry chart and t
 | `nodeSelector`             | Node labels for pod assignment | `{}` |
 | `tolerations`              | Toleration labels for pod assignment | `[]` |
 | `affinity`                 | Affinity settings for pod assignment | `{}` |
+| `podAnnotations`           | Key-value pairs to add as pod annotations | `{}` |
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
 

charts/unifi/templates/deployment.yaml

@@ -18,6 +18,12 @@ spec:
       labels:
         app: {{ template "unifi.name" . }}
         release: {{ .Release.Name }}
+      {{- if .Values.podAnnotations }}
+      annotations:
+        {{- range $key, $value := .Values.podAnnotations }}
+        {{ $key }}: {{ $value | quote }}
+        {{- end }}
+      {{- end }}
     spec:
       containers:
         - name: {{ .Chart.Name }}

charts/unifi/values.yaml

@@ -151,3 +151,5 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+podAnnotations: {}