args: Honor config-dir & quiet wherever they are (#3356)

setGlobalsFromContext() is added to set global variables after parsing
command line arguments. Thus, global flags will be honored wherever
they are placed in minio command.

cmd/version-main.go

@@ -43,8 +43,14 @@ func mainVersion(ctx *cli.Context) {
 	if len(ctx.Args()) != 0 {
 		cli.ShowCommandHelpAndExit(ctx, "version", 1)
 	}
-	// Set global quiet flag.
-	if ctx.Bool("quiet") || ctx.GlobalBool("quiet") {
+
+	// Set global variables after parsing passed arguments
+	setGlobalsFromContext(ctx)
+
+	// Initialization routine, such as config loading, enable logging, ..
+	minioInit()
+
+	if globalQuiet {
 		return
 	}