(feat) Standardise and Harden default app securitycontext (#1028)

* Apply security hardened defaults to values.yaml for all apps

* Add default common securityContext to all apps

* Adjust securityContext defaults in questions.yaml, according to values.yaml

* Add default common podSecurityContext to all apps

* Clean whitespace

* Clean more whitespace

* Adjust podSecurityContext defaults in questions.yaml, according to values.yaml

* fix pgadmin

Co-authored-by: Stavros kois <s.kois@outlook.com>

charts/stable/owncloud-ocis/values.yaml

@@ -14,17 +14,7 @@ image:
   pullPolicy: IfNotPresent
 
 securityContext:
-  privileged: false
   readOnlyRootFilesystem: false
-  allowPrivilegeEscalation: true
-  runAsNonRoot: true
-
-podSecurityContext:
-  runAsUser: 568
-  runAsGroup: 568
-  fsGroup: 568
-  supplementalGroups: []
-  fsGroupChangePolicy: "OnRootMismatch"
 
 # -- environment variables. See more environment variables in the [owncloud-ocis documentation](https://owncloud.dev/ocis/configuration/#environment-variables).
 # @default -- See below
@@ -40,7 +30,6 @@ service:
       main:
         port: 9200
 
-
 # -- Configure persistence settings for the chart under this key.
 # @default -- See values.yaml
 persistence: