Fixes namespace bindings of ValueReference when updating property in WFS-T 2.0.0

[dstenger]

This fix targets the transaction functionality of WFS 2.0.0.

Previously, when a ValueReference was updated by an update transaction the namespace was not considered. Instead, the default namespace of the FeatureType was used.

For example (POST body of update request):

<wfs:Transaction xmlns:wfs="http://www.opengis.net/wfs/2.0" xmlns:gml="http://www.opengis.net/gml/3.2" service="WFS"
  version="2.0.0">
  <wfs:Update xmlns:ns30="http://www.deegree.org/app" typeName="ns30:ft">
    <wfs:Property>
      <wfs:ValueReference>gml:name[1]</wfs:ValueReference>
      <wfs:Value>Ce n&amp;apos;est pas Vieux-Port de Montr&amp;#xe9;al!</wfs:Value>
    </wfs:Property>
    <fes:Filter xmlns:fes="http://www.opengis.net/fes/2.0">
      <fes:ResourceId rid="ft_411196921" />
    </fes:Filter>
  </wfs:Update>
</wfs:Transaction>

In the current implementation of deegree the property app:name is updated instead of gml:name.

This fix introduces a determination of the namespace URI for properties. The so determined namespace is used to update the property then. If no namespace binding is given or it does not match any namespace URI, the previous behaviour is retained: The namespace of the FeatureType is used.