Talos support

[rothgar]

I was recently running kube-bench on a cluster with talos linux and there were a few things I had to change in the job spec to make it work. Would you be open to a PR that supports running kube-bench on clusters running on Talos?

Here's a short list of things I had to change:

1. Run in kube-system namespace. Talos has default pod security policies that don't let privileged pods run outside of kube-system. So we either need to create a namespace and annotate it to run privileged pods or run in kube-system.
2. Remove mounts for folders that don't exist. The talos filesystem is read-only and many of the folders that the job tries to mount don't exist on the host. Kubernetes by default tries to create these folders which fails. Folders include anything with systemd in the name (talos doesn't use systemd).

I saw there were other job-*.yaml files in the root of the repo and could contribute my working job-talos.yaml file if there would be interest. I'm not sure if a --benchmark flag is required for tests against Talos because I haven't figured out all of the test requirements so far.