Replace multiple_types_with_properties and multiple_types_with_items with simpler regression tests.
Replace multiple_types_with_properties and multiple_types_with_items with
simpler regression tests.

Julian/jsonschema,wikimedia/operations-debs-python-jsonschema,jamesmarva/jsonschema,varunarya10/jsonschema,eodolphi/jsonschema,eodolphi/jsonschema,sightmachine/jsonschema,Julian/jsonschema,python-jsonschema/jsonschema,wikimedia/operations-debs-python-jsonschema,dnephin/jsonschema,mathewmarcus/jsonschema