xk6-kubernetes extension can't be used in-cluster about xk6-kubernetes

[JorTurFer]

After some tries, that helper doesn't work IDK and I'm a bit lost inside goja to troubleshoot the panic :/
nvm, I have modified a bit the current code to check if we are in-cluster if kubeconfig = "" and now it's working perfectly. This is my patch:

func getClientConfig(options KubeConfig) (*rest.Config, error) {
	kubeconfig := options.ConfigPath
	if kubeconfig == "" {
		// are we in-cluster?
		config, err := restclient.InClusterConfig()
		if err == nil {
			return config, nil
		}
		// we aren't in-cluster
		home := homedir.HomeDir()
		if home == "" {
			return nil, errors.New("home directory not found")
		}
		kubeconfig = filepath.Join(home, ".kube", "config")
	}
	return clientcmd.BuildConfigFromFlags("", kubeconfig)
}

If it's possible, I'd like to draft a PR fixing this instead of having to fork and maintain the repo from my side. Do you want the PR? (I hope so, but maybe there is any good reason that IDK for not supporting in-cluster)
FYI @javaducky

I can try to go further with the controller-runtime helper if you prefer that approach (but maybe I need some help)

[javaducky]

@JorTurFer, please submit a PR with what you've got working. I'll take a look at it as well.

[JorTurFer]

@JorTurFer, please submit a PR with what you've got working. I'll take a look at it as well.

Sure, this is the PR: #101
It's a really small change, but it allows to run this extension inside the cluster using k6-operator. I had to create all the RBAC stuff obviously, but with this change + RBAC changes, I had been able to run the load tests using k6-operator