Fix setup.sql to be aligned with current PostgreSQL Operator

The examples in the custom setup.sql file lacked some of the
steps that had been added to the PostgreSQL Operator since 4.2 was
released, and would cause the setup to fail. This brings it into
align with the current state of the Operator.

Issue: #1506

Author: the1forte

examples/custom-config/setup.sql

@@ -1,31 +1,45 @@
+/*
+ * Copyright 2017 - 2020 Crunchy Data Solutions, Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 --- System Setup
 SET application_name="container_setup";
 
+CREATE EXTENSION IF NOT EXISTS pg_stat_statements;
 CREATE EXTENSION IF NOT EXISTS pgaudit;
 
-CREATE USER PGHA_USER LOGIN;
-ALTER USER PGHA_USER PASSWORD 'PGHA_USER_PASSWORD';
-
-CREATE DATABASE PGHA_DATABASE;
-GRANT ALL PRIVILEGES ON DATABASE PGHA_DATABASE TO PGHA_USER;
+CREATE USER "PGHA_USER" LOGIN;
+ALTER USER "PGHA_USER" PASSWORD $$PGHA_USER_PASSWORD$$;
 
 CREATE USER testuser2 LOGIN;
 ALTER USER testuser2 PASSWORD 'customconfpass';
 
-CREATE DATABASE PGHA_DATABASE;
-GRANT ALL PRIVILEGES ON DATABASE PGHA_DATABASE TO testuser2;
+CREATE DATABASE "PGHA_DATABASE";
+GRANT ALL PRIVILEGES ON DATABASE "PGHA_DATABASE" TO testuser2;
 
 --- PGHA_DATABASE Setup
 
-\c PGHA_DATABASE
+\c "PGHA_DATABASE"
 
+CREATE EXTENSION IF NOT EXISTS pg_stat_statements;
 CREATE EXTENSION IF NOT EXISTS pgaudit;
 
-CREATE SCHEMA IF NOT EXISTS PGHA_USER;
+CREATE SCHEMA IF NOT EXISTS AUTHORIZATION "PGHA_USER";
 
 /* The following has been customized for the custom-config example */
 
-SET SESSION AUTHORIZATION PGHA_USER;
+SET SESSION AUTHORIZATION testuser2;
 
 CREATE TABLE custom_config_table (
 	KEY VARCHAR(30) PRIMARY KEY,