zuul: update git-daemon URL

http:// does not work to fetch Zuul references, we really need to use
git:// protocol which has been made a while back.

While at it, update the hostname to be internal instead of the public
one which is meant for public web access.

No production impact.

bug: 59775
Change-Id: I7a1fea9a5324f65468bef7842dd3122a17e22e8b
Merge "zuul: update git-daemon URL" into production