TEST: speed up some long tests

...mples/ChangeDetection/KullbackLeiblerProfileChDetTest.png

Data/Baseline/OTB/Files/dmDisparityMapEstimationOutput1.txt

Data/Input/pointSet.png

Examples/ChangeDetection/test/CMakeLists.txt

Modules/Registration/DisparityMap/test/CMakeLists.txt

...ion/DisparityMap/test/otbDisparityMapEstimationMethod.cxx

Modules/Segmentation/CCOBIA/test/CMakeLists.txt

Modules/Segmentation/MeanShift/test/CMakeLists.txt