Script for setting up database user, schema, and seed data.

This script is for bootstrapping the initial database. It can be run via
a container, but requires that a Postgres superuser's credentials be
provided via our normal config. That way the superuser can provision a
less-privileged user for the application's database connection.

atst/domain/users.py

@@ -93,10 +93,13 @@ class Users(object):
         return user
 
     @classmethod
-    def give_ccpo_perms(cls, user):
+    def give_ccpo_perms(cls, user, commit=True):
         user.permission_sets = PermissionSets.get_all()
         db.session.add(user)
-        db.session.commit()
+
+        if commit:
+            db.session.commit()
+
         return user
 
     @classmethod