paperless-ngx: Split resources into separate files

The Paperless-ngx ecosystem consists of several services.  Defining the
resources for each service in separate manifest files will make
maintenance a little bit easier.

paperless-ngx/redis.yaml

@@ -0,0 +1,83 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app.kubernetes.io/name: redis
+    app.kubernetes.io/component: redis
+    app.kubernetes.io/instance: paperless-ngx
+    app.kubernetes.io/part-of: paperless-ngx
+  name: redis
+  namespace: paperless-ngx
+spec:
+  ports:
+  - name: redis
+    port: 6379
+  selector:
+    app.kubernetes.io/name: redis
+    app.kubernetes.io/component: redis
+    app.kubernetes.io/instance: paperless-ngx
+  type: ClusterIP
+
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: redis
+  namespace: paperless-ngx
+  labels:
+    app.kubernetes.io/name: redis
+    app.kubernetes.io/component: redis
+    app.kubernetes.io/instance: paperless-ngx
+    app.kubernetes.io/part-of: paperless-ngx
+spec:
+  serviceName: redis
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: redis
+      app.kubernetes.io/component: redis
+      app.kubernetes.io/instance: paperless-ngx
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: redis
+        app.kubernetes.io/component: redis
+        app.kubernetes.io/instance: paperless-ngx
+    spec:
+      containers:
+      - name: redis
+        image: docker.io/library/redis:7
+        imagePullPolicy: IfNotPresent
+        ports:
+        - name: redis
+          containerPort: 6379
+        securityContext:
+          runAsNonRoot: true
+          readOnlyRootFilesystem: true
+          runAsUser: 1000
+          runAsGroup: 1000
+        volumeMounts:
+        - name: data
+          mountPath: /data
+          subPath: data
+        - name: tmp
+          mountPath: /tmp
+      securityContext:
+        fsGroup: 1000
+      volumes:
+      - name: tmp
+        emptyDir:
+  volumeClaimTemplates:
+  - apiVersion: v1
+    kind: PersistentVolumeClaim
+    metadata:
+      name: data
+      labels:
+        app.kubernetes.io/name: redis
+        app.kubernetes.io/component: redis
+        app.kubernetes.io/part-of: paperless-ngx
+    spec:
+      accessModes:
+      - ReadWriteOnce
+      resources:
+        requests:
+          storage: 2Gi