fix noop

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
Don't configureMaasServices any more

The maas packaging has been updated to use localhost instead of a random
interface's IP address, which means we don't have to do this any more.
disable https in swift-proxy config

set use-https: 'no' for swift proxy in default charm config
add swift-proxy <-> glance relation

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
*Correct back menu behaviour with preseeded questions
*Minor formatting
Minor cli fixes
Add optional support for swift (disabled by default)

Also introduce a 'disabled' property for services that aren't quite ready for
use in the installer.

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
Fix pep8erator errors

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