ENH: Propagate MEMORYCHECK_COMMAND and COVERAGE_COMMAND to the CTest test

Tests/CTestTest/test.cmake.in

@@ -42,7 +42,8 @@ CMAKE_CXX_FLAGS:STRING=@CMAKE_CXX_FLAGS@
 CMAKE_C_FLAGS:STRING=@CMAKE_C_FLAGS@
 DART_ROOT:PATH=
 MAKECOMMAND:FILEPATH=@MAKECOMMAND@
-MEMORYCHECK_COMMAND:STRING=
+MEMORYCHECK_COMMAND:STRING=@MEMORYCHECK_COMMAND@
+COVERAGE_COMMAND:FILEPATH=@COVERAGE_COMMAND@
 ")
 
 # if you do not want to use the default location for a