First pass cleanup in tests to make them more readable
First pass cleanup in tests to make them more readable

dvla/vrm-retention-online,dvla/vehicles-online,dvla/vrm-retention-online,dvla/vehicles-online,dvla/vehicles-presentation-common,dvla/vehicles-online,dvla/vehicles-presentation-common,dvla/vrm-retention-online,dvla/vrm-retention-online,dvla/vehicles-online,dvla/vehicles-presentation-common