(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/reg/values.yaml

@@ -13,19 +13,6 @@ image:
   # -- image tag
   tag: v0.16.1@sha256:ae581387764a23c62c1386389e27358bac5088790904938264cb0bcd4e8c946c
 
-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 [reg documentation](https://github.com/genuinetools/reg).
 env:
   # -- Set the container timezone