chore(go.d): simplify cli is help (netdata#19246)

src/go/cmd/godplugin/main.go

@@ -3,7 +3,6 @@
 package main
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 	"os"
@@ -15,7 +14,6 @@ import (
 	"github.com/netdata/netdata/go/plugins/plugin/go.d/agent"
 	"github.com/netdata/netdata/go/plugins/plugin/go.d/cli"
 
-	"github.com/jessevdk/go-flags"
 	"go.uber.org/automaxprocs/maxprocs"
 	"golang.org/x/net/http/httpproxy"
 
@@ -75,8 +73,7 @@ func main() {
 func parseCLI() *cli.Option {
 	opt, err := cli.Parse(os.Args)
 	if err != nil {
-		var flagsErr *flags.Error
-		if errors.As(err, &flagsErr) && errors.Is(flagsErr.Type, flags.ErrHelp) {
+		if cli.IsHelp(err) {
 			os.Exit(0)
 		}
 		os.Exit(1)

src/go/plugin/go.d/cli/cli.go

@@ -6,6 +6,8 @@ import (
 	"strconv"
 
 	"github.com/jessevdk/go-flags"
+
+	"github.com/netdata/netdata/go/plugins/pkg/executable"
 )
 
 // Option defines command line options.
@@ -24,7 +26,7 @@ func Parse(args []string) (*Option, error) {
 		UpdateEvery: 1,
 	}
 	parser := flags.NewParser(opt, flags.Default)
-	parser.Name = "orchestrator"
+	parser.Name = executable.Name
 	parser.Usage = "[OPTIONS] [update every]"
 
 	rest, err := parser.ParseArgs(args)
@@ -40,3 +42,7 @@ func Parse(args []string) (*Option, error) {
 
 	return opt, nil
 }
+
+func IsHelp(err error) bool {
+	return flags.WroteHelp(err)
+}