[autotest] Bump |num| for hwqual up to 2.

With the addition of the "webcam" label, the number of HostSpecs
exceeded the number of hosts for hwqual. This restores the ability to
run to the hwqual suite.

BUG=None
TEST=sanity

Change-Id: I5256815c5237f51c16d1f09fd7fbc5cd66eee23e
Reviewed-on: https://gerrit.chromium.org/gerrit/40023
Tested-by: Alex Miller <milleral@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Queue: Alex Miller <milleral@chromium.org>
1 file changed