Rename JSONBase -> TypeMeta in preparation for v1beta3

Will make subsequent refactor much easier

pkg/api/context.go

@@ -64,7 +64,7 @@ func NamespaceFrom(ctx Context) (string, bool) {
 }
 
 // ValidNamespace returns false if the namespace on the context differs from the resource.  If the resource has no namespace, it is set to the value in the context.
-func ValidNamespace(ctx Context, resource *JSONBase) bool {
+func ValidNamespace(ctx Context, resource *TypeMeta) bool {
 	ns, ok := NamespaceFrom(ctx)
 	if len(resource.Namespace) == 0 {
 		resource.Namespace = ns