re-add sys import

Was removed from previous branch merges and updates. Re-adding
back.

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
Removed useless folder

Instead of a folder with code in its __init__.py, "juju" is now a proper
python file.
Fixed typoes

Also added a quick ownership tag for a FIXME (it wasn't immediately
obvious who "I" was refering to)
Removed magic numbers from step_info invocation

The method defined never-used defaults, and the only invocation passed
in different magic numbers. Now the default numbers are the ones that
are used.
check for interfaces with no IP. fixes #201
Remove superfluous supers
Merge pull request #229 from sparkiegeek/master

Remove superfluous supers [r=chrisglass]
Moved the magic defaults to GUI

As requested.
Moved FIXME to relevant place.
Merge pull request #230 from chrisglass/random-fixes

Looks good, thanks!
Add tests for openstack release setting, minor cleanup for install_type switch.
Fix merge conflicts
Misc cleanups to indentation, remove unnecessary calls
Removed dead bash scripts.
Merge pull request #227 from Ubuntu-Solutions-Engineering/safer_netutils

check for interfaces with no IP. fixes #201
Add comment (tribaal's review)
More random cleanups
Merge pull request #231 from sparkiegeek/openstack-rel-tests

Add tests for openstack release setting, cleanup for install_type switch [r=chrisglass]
Merge pull request #232 from chrisglass/remove-dead-bash

Removed dead bash scripts.
Merge master, fix conflicts