feat(goctl): Support gateway sample generation (#3049)

tools/goctl/env/env.go

@@ -7,10 +7,10 @@ import (
 	"github.com/zeromicro/go-zero/tools/goctl/pkg/env"
 )
 
-func write(_ *cobra.Command, _ []string) error {
+func write(_ *cobra.Command, args []string) error {
 	if len(sliceVarWriteValue) > 0 {
 		return env.WriteEnv(sliceVarWriteValue)
 	}
-	fmt.Println(env.Print())
+	fmt.Println(env.Print(args...))
 	return nil
 }