Pull request #860: Feature/VECTO-1449 input data for exempted vehicles

Merge in VECTO/vecto-sim from VECTO/mq_vecto-sim:feature/VECTO-1449-input-data-for-exempted-vehicles to develop

* commit '17588638':
  updating release notes: info on handling exempted vehicles
  change sleepercab from boolean too boolean?, adapt testdata and testcases for exempted vehicles; lookup vehicle class for exempted vehicles if axleconfiguration is available
  adding 2.2.1 schema, adding inputdataprovider for 2.2.1 exempted vehicles, adapting testcase for exempted
  adding testfiles for exempted vehicles
  update latest version of  MRF: allow axle configuration, sleeper cab and vehicle group for exempted vehicles
  adding sleeper cab as optional input in XSD 1.0; new xsd version 2.2.1 for exempted vehicles with axle configuration and sleeper cab as input parameters