Start api directory, which will become a module.

api/types/replica.go

@@ -0,0 +1,16 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package types
+
+// Replica specifies a modification to a replica config.
+// The number of replicas of a resource whose name matches will be set to count.
+// This struct is used by the ReplicaCountTransform, and is meant to supplement
+// the existing patch functionality with a simpler syntax for replica configuration.
+type Replica struct {
+	// The name of the resource to change the replica count
+	Name string `json:"name,omitempty" yaml:"name,omitempty"`
+
+	// The number of replicas required.
+	Count int64 `json:"count" yaml:"count"`
+}