Accomplishing the same access to the commit entry, with more readable
code.
Reported-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
Initially only a DCO validation for travis, but is set up for further
validation on commits as well.
https://github.com/opencontainers/specs/issues/90
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>