Fix invalid fields in values for postgresql

The postgresql chart currently fails to run when deployed with
helm v3 due to invalid fields defined in values.yaml that are
more strictly enforced. This change removes these invalid values
to allow deploying the postgresql chart with helm v3.

Change-Id: Iabd3cfa77da618026ceb2dfdffd5d2a0b1519d93

postgresql/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v9.6
 description: OpenStack-Helm PostgreSQL
 name: postgresql
-version: 0.1.13
+version: 0.1.14
 home: https://www.postgresql.org
 sources:
   - https://github.com/postgres/postgres

postgresql/values.yaml

@@ -31,8 +31,6 @@ pod:
         runAsUser: 999
         # fsGroup used to allows cert file be witten to file.
         fsGroup: 999
-        allowPrivilegeEscalation: false
-        readOnlyRootFilesystem: true
       container:
         set_volume_perms:
           runAsUser: 0
@@ -43,8 +41,6 @@ pod:
     postgresql_backup:
       pod:
         runAsUser: 65534
-        allowPrivilegeEscalation: false
-        readOnlyRootFilesystem: true
       container:
         backup_perms:
           runAsUser: 0

releasenotes/notes/postgresql.yaml

@@ -14,4 +14,5 @@ postgresql:
   - 0.1.11 Update htk requirements
   - 0.1.12 Enhance postgresql backup
   - 0.1.13 Remove set -x
+  - 0.1.14 Fix invalid fields in values
 ...