Run GKE device plugin tests with nvidia-tesla-p100 as well.
Run GKE device plugin tests with nvidia-tesla-p100 as well.

We run it infrequently (once every 12h) because it's expensive and the main
functionality is already tested by the other tests.

GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid