chore: Add license to hack gen (#2536)

Author: jonathan-innis

hack/code/prices_gen.go

@@ -20,7 +20,6 @@ import (
 	"flag"
 	"fmt"
 	"go/format"
-	"io/ioutil"
 	"log"
 	"os"
 	"runtime"
@@ -31,6 +30,8 @@ import (
 
 	"github.com/aws/aws-sdk-go/aws/session"
 	ec22 "github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/samber/lo"
+
 	"github.com/aws/karpenter/pkg/cloudprovider/aws"
 )
 
@@ -65,6 +66,8 @@ func main() {
 
 	src := &bytes.Buffer{}
 	fmt.Fprintln(src, "//go:build !ignore_autogenerated")
+	license := lo.Must(os.ReadFile("hack/boilerplate.go.txt"))
+	fmt.Fprintln(src, string(license))
 	fmt.Fprintln(src, "package aws")
 	fmt.Fprintln(src, `import "time"`)
 	now := time.Now().UTC().Format(time.RFC3339)
@@ -81,7 +84,7 @@ func main() {
 		log.Fatalf("formatting generated source, %s", err)
 	}
 
-	if err := ioutil.WriteFile(flag.Arg(0), formatted, 0644); err != nil {
+	if err := os.WriteFile(flag.Arg(0), formatted, 0644); err != nil {
 		log.Fatalf("writing output, %s", err)
 	}
 	runtime.GC()