Tests: Update RunCMake.DependencyGraph to canonicalize paths when comparing

A symbolic link in the path was causing false path mismatches.
Resolving the symlinks makes both paths identical.
Signed-off-by: William R. Dieter <william.r.dieter@intel.com>

Tests/RunCMake/DependencyGraph/RunCMakeTest.cmake

@@ -10,7 +10,8 @@ function(check_files dir)
   set(actual)
   foreach(i IN LISTS glob)
     if(NOT i MATCHES "(\\.manifest$)|(\\.exp$)|(\\.tds$)")
-      list(APPEND actual ${i})
+      get_filename_component(real_path ${i} REALPATH)
+      list(APPEND actual ${real_path})
     endif()
   endforeach()
   list(REMOVE_DUPLICATES actual)