test: adjust test-push-race.t timeout's to overall test timeout
The generic `tests/testlib/wait-on-file` mechanism scale its timeout with the
value of `HGTEST_TIMEOUT`, the `delaypush.py` in `test-push-race.t` is not doing
this, and we have been seeing more and more timeout from loaded CI worker
lately.
Adding this timeout scaling should help with that.
# __init__.py - Startup and module loading logic for Mercurial.
#
# Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
# Allow 'from mercurial import demandimport' to keep working.
import hgdemandimport
demandimport = hgdemandimport