Update to use groundhog2k postgres chart

Author: GDYendell

charts/apps/templates/postgres-app.yaml

@@ -9,9 +9,9 @@ metadata:
 spec:
   project: {{ default .Release.Namespace .Values.project }}
   source:
-    repoURL: https://charts.bitnami.com/bitnami
+    repoURL: https://groundhog2k.github.io/helm-charts
     targetRevision: {{ .Values.postgresql.targetRevision }}
-    chart: postgresql
+    chart: groundhog2k/postgres
     helm:
       valuesObject:
         auth: