repo init: Fix formatting

Change-Id: 4532c62a41
hook/salsaflow-pre-push: Implement the hook

Implement a pre-push hook that makes sure that the Story-Id tag is in
every commit that is being pushed. Push is rejected in case the tag is
missing in one of more of the commits.

[ci skip]

Change-Id: 1918f86013
Story-Id: SF-32