Adding rest agent tests, config management

Importing the config we used in overlord. The tests are pretty basic, just
what I grabbed from overlord.
Removing old config system
Fixing logging to use OpenStack's logger
Fixing test url
Merge pull request #6 from rackerlabs/JoshNang/add-teeth-agent

Adding REST agent tests
Merge branch 'master' into JoshNang/implement-deploy-driver

Conflicts:
	ironic_teeth_driver/rest.py
	ironic_teeth_driver/tests/__init__.py
	test-requirements.txt