cmd/go/internal/vcweb: increase script WaitDelay by 30x
This should reduce spurious VCS failures on slow builders, like the
one observed in
https://build.golang.org/log/
e773fe404b2009d67fa34f048e023f0a86663a13
Updates #27494.
Change-Id: Ibb094c8ddf79e0ab481c00fcf501dc955b0da787
Reviewed-on: https://go-review.googlesource.com/c/go/+/447116
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>