COMP: Suppress deprecated SetSeed() warnings in region growing tests

Define ITK_LEGACY_TEST before including each filter header in
itkConfidenceConnectedImageFilterTest, itkConnectedThresholdImageFilterTest,
itkNeighborhoodConnectedImageFilterTest, and
itkVectorConfidenceConnectedImageFilterTest. This silences the
-Wdeprecated-declarations warnings emitted for the legacy SetSeed()
calls inside the ITK_LEGACY_REMOVE guards.

Author: blowekamp

Modules/Segmentation/RegionGrowing/test/itkConfidenceConnectedImageFilterTest.cxx

@@ -17,6 +17,7 @@
  *=========================================================================*/
 
 #include <fstream>
+#define ITK_LEGACY_TEST
 #include "itkConfidenceConnectedImageFilter.h"
 #include "itkImageFileReader.h"
 #include "itkImageFileWriter.h"

Modules/Segmentation/RegionGrowing/test/itkConnectedThresholdImageFilterTest.cxx

@@ -17,6 +17,7 @@
  *=========================================================================*/
 
 #include <fstream>
+#define ITK_LEGACY_TEST
 #include "itkConnectedThresholdImageFilter.h"
 #include "itkImageFileReader.h"
 #include "itkImageFileWriter.h"

Modules/Segmentation/RegionGrowing/test/itkNeighborhoodConnectedImageFilterTest.cxx

@@ -17,6 +17,7 @@
  *=========================================================================*/
 
 #include <fstream>
+#define ITK_LEGACY_TEST
 #include "itkNeighborhoodConnectedImageFilter.h"
 #include "itkImageFileReader.h"
 #include "itkImageFileWriter.h"

Modules/Segmentation/RegionGrowing/test/itkVectorConfidenceConnectedImageFilterTest.cxx

@@ -17,6 +17,7 @@
  *=========================================================================*/
 
 #include <fstream>
+#define ITK_LEGACY_TEST
 #include "itkVectorConfidenceConnectedImageFilter.h"
 #include "itkImageFileReader.h"
 #include "itkImageFileWriter.h"