SimpleITK 9f758175 Filter descriptions (reduced)

This tree was extracted from upstream SimpleITK by the following shell script:
  ./Utilities/UpdateFilterDescriptionsFromSimpleITK.sh
Merge branch 'sitk-upstream'

Conflicts:
	SimpleFilters/Resources/json/ChangeLabelImageFilter.json
	SimpleFilters/Resources/json/LabelMapContourOverlayImageFilter.json
	SimpleFilters/Resources/json/LabelMapMaskImageFilter.json
	SimpleFilters/Resources/json/LabelMapOverlayImageFilter.json
	SimpleFilters/Resources/json/LabelMapToBinaryImageFilter.json
	SimpleFilters/Resources/json/LabelMapToLabelImageFilter.json
	SimpleFilters/Resources/json/LabelMapToRGBImageFilter.json
Verify the update-sitk update branch does not exist before json update
Update to use namespace KernelEnum types for morphology