tests: Use multiple CPUs for image layer storage

Use multiple CPUs for the image layer storage test. The purpose is to
ensure guest-pull using the container image layer storage functionality
with integrity-protected encryption works (writes to
/dev/trusted_store will be multi-threaded).

Signed-off-by: Manuel Huber <manuelh@nvidia.com>

tests/integration/kubernetes/runtimeclass_workloads/pod-guest-pull-in-trusted-storage.yaml.in

@@ -28,6 +28,9 @@ spec:
       command: ["/bin/sh", "-c"]
       args:
         - sleep 6000
+      resources:
+        limits:
+          cpu: "2"
       volumeDevices:
         - devicePath: /dev/trusted_store
           name: trusted-storage