test-subrepo: glob away an unstable hash
This is the instability mentioned at the beginning of the series. I don't like
hiding it, but I don't want to sit on a fix for a user reported problem while
trying to figure this out.
The instability seems related to the cset with a .hgsub with a remote URL.
(There's very little existing remote URL subrepo testing.)
To run the tests, do:
cd tests/
python run-tests.py
See https://mercurial-scm.org/wiki/WritingTests for
more information on writing tests.