Increase max cpu to 2 for race.

[st424204]

Increase max cpu to 2 for race.

[google-cla[bot]]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[winmoekyaw7]

Thanks you

[koczkatamas]

Hey! Our kernelCTF instances allow 2 CPUs. I assume this will resolve this issue, but feel free to re-open if it isn't. (kCTF VRP does not accept Linux kernel vulnerabilities anymore.)