shield Recommended update for python-kiwi

SUSE-SLE-SAP-12-SP4-2019-1979

This update for python-kiwi fixes the following issues: - The method get_persistent_device_from_unix_node takes a device path and looks up it's basename. If the method receives an already persistent device the persistent schema representation will only match a numbered dm-N device and not the map name. The method then returns nothing but should return the original device path. (bsc#1140813)