Make git commit message checking mandatory

This commit is intended to enable the commit message rule checking for
all OpenBMC repositories.  It was previously discussed, and several
repos have opted into the current solution without any incident, or
incorrectly-rejected patchsets that I'm aware of.

The very minor issue of CI not rebuilding on a commit message update has
been resolved, so we should be good to enable this project-wide.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I2a845518b18de21d3fd1d71d38c71d3d36038eb2
1 file changed