LAVA: Extend monitor timeout to 10 min

Some test cases may take more than 5 min, which is expected. So extend
the monitor timeout to 10 min to avoid the wrongly reported failure.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I6d4edde8223b9f6c2f0c75a365f67dca60dc6380
1 file changed