Hide stderr output of test_history hook
Hide stderr output of test_history hook

It outputs the relevant tests to stdout, but messages on stderr. This is
annoying in the context of our git hooks, which will squawk at you
anyway.

Change-Id: Id9bf1ed161840bc049bdf1d4de157a17c7199867
Reviewed-on: https://gerrit.causes.com/11953
Reviewed-by: Greg Hurrell <79e2475f81a6317276bf7cbb3958b20d289b78df@causes.com>
Tested-by: Aiden Scandella <1faf1e8390cdac9204f160c35828cc423b7acd7b@causes.com>

TheSooth/overcommit,TheSooth/overcommit,oxocode/overcommit,blech75/overcommit,gnagel/overcommit,gnagel/overcommit,blech75/overcommit,oxocode/overcommit