Description of problem:
The database connection tests do not pass if run by themselves.

Version-Release number of selected component (if applicable):
master

How reproducible:
Every time.

Steps to Reproduce:
1. $ nosetests -sx server/test/unit/server/db/test_connection.py

Actual results:
$ nosetests -sx server/test/unit/server/db/test_connection.py
......F
======================================================================
FAIL: test_initialize_username_and_password (unit.server.db.test_connection.TestDatabaseAuthentication)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/mock.py", line 1201, in patched
    return func(*args, **keywargs)
  File "/home/rbarlow/devel/pulp/server/test/unit/server/db/test_connection.py", line 327, in test_initialize_username_and_password
    max_pool_size=10, port=27017)
  File "/usr/lib/python2.7/site-packages/mock.py", line 846, in assert_called_once_with
    return self.assert_called_with(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/mock.py", line 835, in assert_called_with
    raise AssertionError(msg)
AssertionError: Expected call: connect('pulp_unittest', username='admin', host='localhost', password='admin', max_pool_size=10, port=27017)
Actual call: connect('pulp_database', username='admin', host='localhost', password='admin', max_pool_size=10, port=27017)
-------------------- >> begin captured logging << --------------------
pulp.server.db.connection: DEBUG: Attempting username and password authentication.
pulp.server.db.connection: DEBUG: Connection Arguments: {'username': 'admin', 'host': 'localhost', 'password': 'admin', 'max_pool_size': 10, 'port': 27017}
pulp.server.db.connection: DEBUG: Querying the database to validate the connection.
pulp.server.db.connection: INFO: Mongo database for connection is version 2.4.0
--------------------- >> end captured logging << ---------------------

----------------------------------------------------------------------
Ran 7 tests in 0.044s

FAILED (failures=1)

Expected results:
Tests should all pass.