settings.get_firewall_db_connection() is not found in Settings object

[jathanism]

Traceback (most recent call last):
  File "/opt/bcs/bin/acl", line 84, in <module>
    queue = Queue()
  File "/opt/bcs/packages/python-modules-2.0/lib/python/site-packages/trigger/acl/queue.py", line 42, in __init__
    self.dbconn = settings.get_firewall_db_conn()
AttributeError: 'Settings' object has no attribute 'get_firewall_db_conn'

Because of the recent changes to how settings are imported, anything not in ALL_CAPS is not attached to the settings object. Need to fix this so that the database helper can be called.