fix: GEOS-5749 Failed to find response for output format jsonp

Conflicts:

	src/wfs/src/test/java/org/geoserver/wfs/json/JSONTypeTest.java
Merge pull request #208 from ccancellieri/2.2.x-GEOS-5749-fail-enable-jsonp-format

fix: GEOS-5749 Failed to find response for output format jsonp