- added new xsl stylesheet 5.8 -> 5.9
  * the controller type 'scsi' does not exist for VMware.
    lsilogic and buslogic define scsi controllers. Thus this
    attribute value is moved back to the default 'ide' value
    Using new controller types requires a specific version of
    qemu-img which means the only safe translation is back to
    ide
- update kiwi schema to version 5.9
  * removed scsi as allowed value from vmdisk controller attribute
- update all image descriptions to schema version 5.9
- removed support for controller="scsi" in KIWIImageFormat
  and adapted the runtime checker as well as the unit test