Disable H803 check.

H803: Git commit title should not end with period.

I don't think we really care whether a commit title ends with a period
or not. Certainly not enough to warrant patches failing checks and
wasting people's time and CI resources.

Change-Id: I52fd73c35545943b1a7e2cec62ddb52a5f90a24b
Closes-bug: 1236621.
Merge "Disable H803 check."