Martin von Zweigbergk <martinvonz@google.com> [Fri, 18 Aug 2017 12:50:26 -0700] rev 33861
tests: use graph log in {latesttag} tests
The tests are much easier to read if one does not have to re-read the
setup part all the time to understand the graph shape.
Differential Revision: https://phab.mercurial-scm.org/D446