Migrate write-good hook to pre-commit

Migrate write-good hook to pre-commit

This is a final patch to remove our dependency on the Coala platform
and use only pre-commit moving forward.

This patch also resolves write-good lint issues that were not caught
by the Coala version of write-good due to file ignore rules that
excluded several files from being scanned. With pre-commit we can
create separate rules to exclude more specific scans while no excluding
the file from scans entirely.

Issue: RELENG-2642
Signed-off-by: Thanh Ha <zxiiro@gmail.com>
Change-Id: Ic9a48b2964ff5c689a01f3fd611e69ef9525e055