Extract the hammer plugin to separate repo.

The code is now available under

    https://github.com/iNecas/hammer-cli-foreman-tasks

There are two reasons for this:

  * it now follows the standard layout for Hammer plugins
  * it makes it easier from rel-eng point of view (tito doesn't play
    well with more specs in the same dir
Merge pull request #26 from iNecas/extract-hammer

Extract the hammer plugin to separate repo.