Add a pinch of logging
Add list_flavors method
Add list_images method
Add get_cinder_url method
Add create_volume method
Add delete_volume method
Add list_volumes method
Add attach_volume method
Add detach_volume method
Standardize run_instance method

- wait for instance to be in a running state
- try to attach volume if specified
- return instance info
Wait for instance to be stopped
Wait for instance to be started
Wait for volume to become available