When a new project is created its refs/meta/config branch is created
with the project's initial config. This should result in a ref-updated
event being emitted.
These tests don't create the project with an initial empty commit,
so there should therefore be no corresponding ref-updated event for
the refs/heads/master branch.
Change-Id: I5fadc4b8221637807aaa3275783cbb1228c6bbc9
349e4026be