fix postgres db name/username

charts/nextcloud/1.6.15/templates/postgres-secret.yaml

@@ -4,7 +4,7 @@ kind: Secret
 metadata:
   name: {{ $secretName }}
 data:
-  db-user: {{ "postgres" | b64enc }}
+  db-user: {{ (include "postgres.DatabaseName" .Values ) | b64enc }}
   {{ with (lookup "v1" "Secret" .Release.Namespace $secretName) }}
   db-password: {{ index .data "db-password" }}
   {{ else }}

test/nextcloud/1.6.15/templates/postgres-secret.yaml

@@ -4,7 +4,7 @@ kind: Secret
 metadata:
   name: {{ $secretName }}
 data:
-  db-user: {{ "postgres" | b64enc }}
+  db-user: {{ (include "postgres.DatabaseName" .Values ) | b64enc }}
   {{ with (lookup "v1" "Secret" .Release.Namespace $secretName) }}
   db-password: {{ index .data "db-password" }}
   {{ else }}