* filesystem: list used tools
* filesystem: btrfs and reiserfs don't support resizing
* filesystem: list supported filesystems
use formatting functions and 'filesystem' instead of 'file system'
* filesystem: PEP8
* filesystem: remove useless calls to module.boolean
* filesystem: fail when the requested action isn't implemented
* filesystem: resizefs: list supported FS rather than unsupported
* filesystem: refactor
* filesystem: add integration tests
* filesystem: allow to use image file with 'dev' param
* filesystem: test resizefs (ext2/3/4 filesystems only)
* filesystem: Btrfs, handle older version than v0.20-rc1
* filesystem: use loop keyword (integration tests)
* filesystem: new test, check when another filesystem already exists
* filesystem: add myself as a maintainer
* filesystem: fix tests as filters
