Migrate write-good hook to pre-commit

Migrate write-good hook to pre-commit

This migrates write-good hook over to pre-commit which is the final
hook needed to remove our coala dependency.

Also resolve write-good suggestions on files except jenkins.rst (it is
currently too large a task for my time so place an exception there until
we have cycles to take care of it).

Ref: https://jira.linuxfoundation.org/browse/RELENG-2642
Change-Id: I26b5a416d93ea69cbf319e14c138e971bcb4e6af
Signed-off-by: Thanh Ha <zxiiro@gmail.com>