How to keep Reviewed-by lines in git commits with gerrit.

[Florian Weimer]

* Carlos O'Donell:

> I think we *will* have to give the instances a way to push without
> a shell account, and I'm not sure how to do that.

I think that's the default sourceware.org setup.  The login shell
seems to be /sourceware/infra/bin/rash.  I think there are scripts to
set this up.  We just need to bypass any email challenges.  I expect
Frank knows all the details.