Adding additional fields for openid configuration (#1132)

Signed-off-by: Lenin Alevski <alevsk.8772@gmail.com>

restapi/admin_config.go

@@ -169,7 +169,11 @@ func setConfigWithARNAccountID(ctx context.Context, client MinioAdmin, configNam
 func buildConfig(configName *string, kvs []*models.ConfigurationKV) *string {
 	configElements := []string{*configName}
 	for _, kv := range kvs {
-		configElements = append(configElements, fmt.Sprintf("%s=%s", kv.Key, kv.Value))
+		key := kv.Key
+		val := fmt.Sprintf("\"%s\"", kv.Value)
+		if key != "" {
+			configElements = append(configElements, fmt.Sprintf("%s=%s", key, val))
+		}
 	}
 	config := strings.Join(configElements, " ")
 	return &config