1.16: apiextensions: validate list-type and map-type "atomic"

staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/types_jsonschema.go

@@ -103,7 +103,7 @@ type JSONSchemaProps struct {
 	//      may be used on any type of list (struct, scalar, ...).
 	// 2) `set`:
 	//      Sets are lists that must not have multiple items with the same value. Each
-	//      value must be a scalar (or another atomic type).
+	//      value must be a scalar or an array with x-kubernetes-list-type `atomic`.
 	// 3) `map`:
 	//      These lists are like maps in that their elements have a non-index key
 	//      used to identify them. Order is preserved upon merge. The map tag

staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1/types_jsonschema.go

@@ -109,7 +109,8 @@ type JSONSchemaProps struct {
 	//      may be used on any type of list (struct, scalar, ...).
 	// 2) `set`:
 	//      Sets are lists that must not have multiple items with the same value. Each
-	//      value must be a scalar (or another atomic type).
+	//      value must be a scalar, an object with x-kubernetes-map-type `atomic` or an
+	//      array with x-kubernetes-list-type `atomic`.
 	// 3) `map`:
 	//      These lists are like maps in that their elements have a non-index key
 	//      used to identify them. Order is preserved upon merge. The map tag

staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/types_jsonschema.go

@@ -109,7 +109,8 @@ type JSONSchemaProps struct {
 	//      may be used on any type of list (struct, scalar, ...).
 	// 2) `set`:
 	//      Sets are lists that must not have multiple items with the same value. Each
-	//      value must be a scalar (or another atomic type).
+	//      value must be a scalar, an object with x-kubernetes-map-type `atomic` or an
+	//      array with x-kubernetes-list-type `atomic`.
 	// 3) `map`:
 	//      These lists are like maps in that their elements have a non-index key
 	//      used to identify them. Order is preserved upon merge. The map tag