Action 'unpack' refactored
Action 'unpack' refactored

- Move unpack of tar archive to dedicated function 'UnpackTarArchive' to allow
  use it not only with 'unpack' action.
- Add support of 'bzip2' and 'xz' compression types.
- Add possibility to pass additional arguments for 'tar'.

Signed-off-by: Denis Pynkin <3fbf95ee68899518ee8799d35f88c8f7982aa936@collabora.com>

go-debos/debos,d4s/debos