musca-b: reduce LAVA test monitor timeout

Reduce the lava-test-monitor timeout from 30min to 10min.
Because, in average of the successful test jobs time is
around 6.5min. If timeout too long, the device will be locked
when something wrong in the test image, and the pending job
will start accumulate in the queue.

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: I22b5db96f3c30b3363183c74952a0c4e4001fe97
1 file changed