chromeos_config: Use release timeout on release.

Currently, the build timeout assertion asserts a constant timeout
value. However, the configuration chooses the timeout value based on the
IS_RELEASE_BRANCH configuration variable. Make the test also choose the
constant to assert based on IS_RELEASE_BRANCH.

BUG=chromium:579565
TEST=None

Change-Id: I79d215d2e7ad70ff0a68cff1c399b2fac8dc91d7
Reviewed-on: https://chromium-review.googlesource.com/322822
Reviewed-by: Josafat Garcia <josafat@chromium.org>
Commit-Queue: Daniel Jacques <dnj@chromium.org>
Tested-by: Daniel Jacques <dnj@chromium.org>
1 file changed