Chameleon: Increase the retry timeout of flaky calls

Snow takes longer time for a call. For example, the set_mirrored()
takes >20 seconds on the first time calling it. So it doesn't trigger
any retrial. So increase the timeout to 60 seconds.

BUG=chromium:434933
TEST=Ran the display_SwitchMode test on Snow passed many time.

Change-Id: I2312555ddc74239a09355e113c8e26ed0a32a959
Reviewed-on: https://chromium-review.googlesource.com/230930
Tested-by: Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Hung-ying Tyan <tyanh@chromium.org>
Commit-Queue: Wai-Hong Tam <waihong@chromium.org>
1 file changed