add use_dhcp_assigned_default_route setting to allow for dhcp bridged interfaces which have a default route assigned by dhcp
Need to correctly configure the template's options.

pull the config through the bridged interface configuration routine

template debugging

add another test line

set the setting in the correct areas, yay dynamic method calls
Don't use IdentitiesOnly under 'ssh -p'
Protip, don't apply changes from old released versions to master
`vagrant destroy` works in "guru meditation" state
added completion for bash
Basic Plugin class
Ability to define configuration classes on plugins
V1 config loading using plugins as a source for config keys
Config merging
Move core config into a plugin
Loader uses the new configuration classes
Get rid of the UNSET_VALUE stuff, save it for v2
Remove old configuration classes
Start moving guest configuration out into plugins
Add README to plugin directory
Major guests have been moved to plugins
Move all guests to plugins, even the distros
Add logging to v1 plugin registration
Move provisioners into plugins