Added regex to parse the dell switch cmd prompt.
modified the regex in dell.py to match the cmd prompt of dell switch
decreased the verbosity of the code in dell.py
Removed some redundant code
Removed redundant files.
removed files
Cleanup minor issues in rest_api.md

- Spacing is now more consistent
- A few calls were slightly rearranged
Make the 'group' parameter explicit

I think this way is clearer, and it's actually shorter too.
Change 'label' to 'id' in rest_api.md
Add missing API calls to rest_api.md

Some of them don't have an obvious REST interface---those are marked at the
end.
Miscellaneous fixes to apidesc.md

These are similar to the changes made to rest_api.md.
Fix small typos in node_{register,delete}_nic
Revert 3340d0a

Change 'id' back to 'label' in rest_api.md
Also let 'id' -> 'label' in apidesc.md
haas.model.Switch: Changed the name of the `model` column to `driver`

This is a more accurate description and doesn't collide with the term
"database model," which makes it less confusing.
Added some tests for switch_{register,delete}

These are failing, since the functions have not yet been implemented.
Implemented `switch_register`.

This fixes two of the test failures from the last commit.
switch_delete

Fixes the other two test failures.
switch_{register,delete}: implemented http/cli wrappers.
Fix CLI help for headnode_{create,delete}_hnic