CC | Test for parameters that controls the launch of containers

[Xynnn007]

kata-containers/kata-containers#6707 made it possible to change the policy.json, auth file and sigstore config file to be used inside the confidential VM via kernel commandline.

We need related CI tests for this, which aims to

1. Use different KBS URI of policy.json and/or the other two settings and check if the launch process is expected

To achieve this, we need to configure the resources in KBS ahead of time.

cc @stevenhorsman