test: adjust test-push-race.t timeout's to overall test timeout...
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.