Add pgaudit tests

nix/tests/expected/pgaudit.out

@@ -0,0 +1,24 @@
+-- Note: there is no test that the logs were correctly output. Only checking for exceptions
+set pgaudit.log = 'write, ddl';
+set pgaudit.log_relation = on;
+set pgaudit.log_level = notice;
+create schema v;
+create table v.account(
+  id int,
+  name text,
+  password text,
+  description text
+);
+insert into v.account (id, name, password, description)
+values (1, 'user1', 'HASH1', 'blah, blah');
+select
+  *
+from
+  v.account;
+ id | name  | password | description 
+----+-------+----------+-------------
+  1 | user1 | HASH1    | blah, blah
+(1 row)
+
+drop schema v cascade;
+NOTICE:  drop cascades to table v.account

nix/tests/sql/pgaudit.sql

@@ -0,0 +1,23 @@
+-- Note: there is no test that the logs were correctly output. Only checking for exceptions
+set pgaudit.log = 'write, ddl';
+set pgaudit.log_relation = on;
+set pgaudit.log_level = notice;
+
+create schema v;
+
+create table v.account(
+  id int,
+  name text,
+  password text,
+  description text
+);
+
+insert into v.account (id, name, password, description)
+values (1, 'user1', 'HASH1', 'blah, blah');
+
+select
+  *
+from
+  v.account;
+
+drop schema v cascade;