postgresql: Revert "Add default reject rule ..."

This reverts commit 982e3754a5.
"Add default reject rule end in Postgres pg_hba.conf to ensure all
connections must be explicitly allowed."

The original commit introduced a breaking change when installing with
the chart defaults - before, all remote connections with md5 auth were
allowed, and after the change, only explicit users are allowed.

This is fully overridable, but the original defaults are more
conservative.

Change-Id: Ib297e480bccd3ac7c0cf15985b3def2c8b3e889e

postgresql/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v9.6
 description: OpenStack-Helm PostgreSQL
 name: postgresql
-version: 0.1.5
+version: 0.1.6
 home: https://www.postgresql.org
 sources:
   - https://github.com/postgres/postgres

postgresql/values.yaml

@@ -277,11 +277,8 @@ conf:
   debug: false
   pg_hba: |
     host all all 127.0.0.1/32 trust
-    host all postgresql-admin 0.0.0.0/0 md5
-    host all postgres 0.0.0.0/0 md5
-    host all psql_exporter 0.0.0.0/0 md5
+    host all all 0.0.0.0/0 md5
     local all all trust
-    host all all 0.0.0.0/0 reject
 
   postgresql:
     archive_mode: 'on'