Start writing some tests
Allow FakeGearClient to be initialized with a dict of canned Units
Add ports and links to the Unit record so that it can be used in FakeGearClient to record the added units
Add a placeholder container_image for now
On Monday I need to find some way of adding the container image to the returned  records...
Merge remote-tracking branch 'origin/master' into discover-node-config-205
remove debug ines
Make FakeGearClient.list return Units without the container_image attribute for now.
Return a list of Applications
A test for multiple applications
A test for when there are no gear units
A note about the new image default
Don't import from a private module. Make Application public instead.
Add a test for the new Unit.container_image default.
Add some missing docstrings
Document the new units argument
More docstring fixes
Add some more flocker.node public APIs
Move the XXX comment to the docstring which will hopefully please flake8
flake8 whitespace fixes