Move code out of rspec notations. Testdrive lvm images.

Signed-off-by: Yury Tsarev <ytsarev@suse.com>
Merge branch 'hackweek9' of github.com:openSUSE/kiwi_spec into hackweek9

* 'hackweek9' of github.com:openSUSE/kiwi_spec:
  Add rstuk dependency