GEOS-6216: app-schema axis order is wrong if bbox property is specified in POST request.

BBOX reprojections are done in GetFeature before getting passed on to the data store (app-schema).
As the geom property name is created from the filter property name, it doesn't have the namespace context. 
As a result, it fails to resolve the geom property name if it's a complex attribute, and then it fails to pass on the CRS, resulting in the wrong axis order.

I added a visitor to inject the namespace context before ReprojectingFilterVisitor processes it. 

Part 2 is in Geotools ReprojectingFilterVisitor: https://github.com/geotools/geotools/pull/347