add version.go generation script to makefile

scripts/update-version.sh

@@ -54,3 +54,33 @@ var GitDirty string = "${git_dirty}"
 // GitShortHash is the short hash of this ecs-init build
 var GitShortHash string = "${git_hash}"
 EOF
+
+cat << EOF > "${CURRENTDIR}"/../agent/version/version.go
+// This is an autogenerated file and should not be edited.
+
+// Copyright 2014-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"). You may
+// not use this file except in compliance with the License. A copy of the
+// License is located at
+//
+//	http://aws.amazon.com/apache2.0/
+//
+// or in the "license" file accompanying this file. This file is distributed
+// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+// express or implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+// Package version contains constants to indicate the current version of the
+// ecs-agent. It is autogenerated.
+package version
+
+// Version is the version of the ecs-agent
+const Version = "${version}"
+
+// GitDirty indicates the cleanliness of the git repo when this ecs-init was built
+const GitDirty = ${git_dirty}
+
+// GitShortHash is the short hash of this ecs-agent build
+const GitShortHash = "${git_hash}"
+EOF