Update rubygem-kafo to 0.5.5-1.el6

- Fixes #5582 - make the Kafo.exit_code set properly in post hooks
- s/hooks_dir/hook_dirs/ (inecas@redhat.com)
- Fixes #5452 - Make sure nil is not part of the keys in Puppet resource
Update rubygem-kafo to 0.5.5-1.fc19

- Fixes #5582 - make the Kafo.exit_code set properly in post hooks
- s/hooks_dir/hook_dirs/ (inecas@redhat.com)
- Fixes #5452 - Make sure nil is not part of the keys in Puppet resource