Martin von Zweigbergk <martinvonz@google.com> [Tue, 23 Mar 2021 09:13:29 -0700] rev 46829
tests: split up test-rebase-obsolete.t in four pieces
The test case took 42 seconds to run the test before this patch and 12
seconds after (wall time, of course).
Differential Revision: https://phab.mercurial-scm.org/D10255