gen_sc7180_bl31_depthcharge_boot_yaml.sh: update test job definition

1. Use more reliable test patterns
2. Extend the timeout to 10 min
3. Update the firmware URL to official place

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Ifa7ee131bb2b5880be033623931b554840482f68
1 file changed