Martin von Zweigbergk <martinvonz@google.com> [Mon, 15 Jul 2019 16:53:07 -0700] rev 4725
tests: update output for new branch cache messsages from Mercurial
This makes tests pass again after Mercurial commit c7d236b55a3e (py3:
fix formatting of branchmap log messages with repo.filtername=None,
2019-07-14).
CORE-TEST-OUTPUT-UPDATE: c7d236b55a3e