Relative Order of Mutating/Validating WebhookConfigs

MutatingWebhookConfig may have similar dependencies as the
ValidatingWebhookConfig. eg. a k8s cluster service. Therefore, it should
be ordered last as well.

This PR preserves the implicit ordering between CustomResources and the
webhook while introducing a relative order between the two webhooks.
i.e. MutatingWebhook should be created prior to the ValidatingWebhook

The change is an enhancement of #1104

api/resid/gvk.go

@@ -84,7 +84,6 @@ var orderFirst = []string{
 	"ResourceQuota",
 	"StorageClass",
 	"CustomResourceDefinition",
-	"MutatingWebhookConfiguration",
 	"ServiceAccount",
 	"PodSecurityPolicy",
 	"Role",
@@ -102,6 +101,7 @@ var orderFirst = []string{
 	"PodDisruptionBudget",
 }
 var orderLast = []string{
+	"MutatingWebhookConfiguration",
 	"ValidatingWebhookConfiguration",
 }
 var typeOrders = func() map[string]int {

api/resid/gvk_test.go

@@ -68,6 +68,10 @@ var lessThanTests = []struct {
 		Gvk{Group: "a", Version: "b", Kind: orderLast[0]}},
 	{Gvk{Group: "a", Version: "b", Kind: "CustomKindA"},
 		Gvk{Group: "a", Version: "b", Kind: "CustomKindB"}},
+	{Gvk{Group: "a", Version: "b", Kind: "CustomKindX"},
+		Gvk{Group: "a", Version: "b", Kind: "MutatingWebhookConfiguration"}},
+	{Gvk{Group: "a", Version: "b", Kind: "MutatingWebhookConfiguration"},
+		Gvk{Group: "a", Version: "b", Kind: "ValidatingWebhookConfiguration"}},
 	{Gvk{Group: "a", Version: "b", Kind: "CustomKindX"},
 		Gvk{Group: "a", Version: "b", Kind: "ValidatingWebhookConfiguration"}},
 	{Gvk{Group: "a", Version: "b", Kind: "APIService"},