Regenerate initrd after configuring keyboard (bnc#888804)

* Some autotranslated code polishing (in a different commit for easier review)
* Update dependency on yast2 >= 3.1.94 (new messages)
The problem with this approach is that it makes less obvious (to me, at least), why those ```allow``` are there. With the current approach, when a helper is stubbing ```:Execute```, that helper is performing the corresponding generic ```allow```. So the cause-effect is clear to me. But just placing this piece of code after chrooting is quite unobvious to me.

Maybe placing it in a global "before(:each)"... hmmm, that's something I could live with :-)