Remove redundant files in nextcloud app

test/nextcloud/1.3.6/default_values.yaml

-## Official nextcloud image version
-## ref: https://hub.docker.com/r/library/nextcloud/tags/
-##
-image:
-  repository: nextcloud
-  tag: 19.0.3-apache
-  pullPolicy: IfNotPresent
-
-nextcloud:
-  host: nextcloud.kube.home
-  username: admin
-  password: changeme
-  datadir: /var/www/html/data
-  strategy: "Recreate"
-
-service:
-  nodePort: 9001
-
-appVolumeMounts:
-  nextcloud-data:
-    emptyDir: true
-    mountPath: "/var/www"
-
-postgresAppVolumeMounts:
-  postgres-data:
-    emptyDir: true
-    mountPath: "/var/lib/postgresql/data"
-  postgres-backup:
-    emptyDir: true
-    mountPath: "/postgres_backups"

test/nextcloud/1.3.6/test_values.yaml

@@ -10,6 +10,11 @@ image:
   pullPolicy: IfNotPresent
   repository: nextcloud
   tag: '22.2'
+nginx:
+  image:
+    repository: nginx
+    tag: 1.21.3
+    pullPolicy: IfNotPresent
 ixChartContext: {}
 nextcloud:
   datadir: /var/www/html/data