stress/stress-ng-test-for-class-{stress-ng-class} add timeout

[Betty Lin]

The memory size in the device is bigger than past. To run stress/stress-ng-test-for-class-{stress-ng-class} will spend a lot of time, on some devices, it may spend more than 12 hours.

Suggest to add timeout to control the test period.

[Kristin Chuang (kristinchuang)]

bug #1866167 marked a duplicate of this bug

[Kristin Chuang (kristinchuang)]

Plan:

Follow what was done for stress/cpu_stress_ng_test[1]:

1) Apply a user defined timeout value if the value exists. If not then use a default timeout of 5 min.
2) Display to the tester the timeout value in use

[1] https://git.launchpad.net/plainbox-provider-checkbox/tree/units/stress/jobs.pxu#n16

[Nara Huang (narahuang)]

MR:
https://code.launchpad.net/~narahuang/plainbox-provider-checkbox/+git/plainbox-provider-checkbox/+merge/393788

[Sylvain Pineau (sylvain-pineau)]

@Nara, could you please check Joc's suggestion by setting a default value in all cases?

[Maksim Beliaev (beliaev-maksim)]

Bug was migrated to GitHub: https://github.com/canonical/checkbox/issues/156.
Bug is no more monitored here.