Add tests to test the correctness of replacement policies using TrafficGen. Enable debug-flags to print the hit and miss messages so that you can compare the results with the comments in the tests. Even though the tests are targeting specific replacement policies, they can be reused to test all replacement policies. Change-Id: I3a8013fbcb19adae25b0818ac9e4b0be60be0689 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/60389 Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Daniel Carvalho <odanrc@yahoo.com.br> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>