tcs := []struct {
		name        string
		webhook     admitv1.MutatingWebhookConfiguration
		tagName     string
		whURL       string
		whSVC       string
		whCA        string
		numWebhooks int
	}{
		{
			name:        "webhook-pointing-to-service",
			webhook:     revisionCanonicalWebhook,
			tagName:     "canary",
			whURL:       "",
			whSVC:       "istiod-revision",
			whCA:        "ca",