Convert LabelMap images to scale image when writing in tests

The LabelMap image are converted to the corresponding scalar type before
writing out and image for CDash.

Change-Id: I607f465273f35ccbb56d70b9272558d5fdfb2723
Improve testing to support inplace check for labelmaps

The sitkHash method now support label maps, so they should not by-pass
testing their hashes.

The input hash was set after the filter was run, this is now right
after the filter has been loaded.

Change-Id: I3339ac69f618b5c675962739798437802dcd23a4
Trim "Filter" suffix for function names in code generation

Only the "ImageFilter" suffix was trimmed from the function
name. LabelMapFitlers, with the same. No just the Filter suffix is
trimmed fro the procedural method, to avoid ambiguity with the Image
version.

Change-Id: Ia8944bdfa4f92b4ee53a80c4dc3e0284adf22f88
ENH: Adding wrapping for basic to LabelMap filters

Change-Id: I31353b319dea98bd227b7af9dffebc982649c769
Merge topic 'SIMPLEITK-512_AddLabelMapFilters' into next

fbc9daab ENH: Adding wrapping for basic to LabelMap filters
7aa73d05 Trim "Filter" suffix for function names in code generation
8052c6b8 Improve testing to support inplace check for labelmaps
cae41d81 Convert LabelMap images to scale image when writing in tests