parameter default handling in __cdist type corrected
parameter default handling in __qemu_img type corrected
parameter default handling in __zypper_service type corrected
parameter default handling in __zypper_repo type corrected
parameter default handling in __key_value type corrected
++changes

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
Merge branch 'master' into 4.0-pre-not-stable