testing/infra/emulator: allow to specify pexpect timeout

Some commands take more than 5 seconds to complete under QEMU, so add
provisions to allow individual unit-test to specify different duration
to avoid false negative test failures.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Tested-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
1 file changed