checkcommits: Add version to usage.
checkcommits: Add version to usage.

Include a version string in the help output.

Signed-off-by: James O. D. Hunt <348fbaadfbada55ea105602bf5609e23ac1c4898@intel.com>

devimc/tests,bwarden/tests,GabyCT/tests,chavafg/tests,sboeuf/tests,clearcontainers/tests,clearcontainers/tests,MarioCarrilloA/tests,bwarden/tests,MarioCarrilloA/tests,GabyCT/tests,chavafg/tests,sboeuf/tests,devimc/tests