"path": "/dev/stdout",
                              "log_format": {
                                "text_format_source": {

}

// findMatchedConfigs should filter out unrelated configs that are not matched given podsLabels.
// When the config has no selector labels, this method will treat it as qualified namespace level
// config. So configs passed into this method should only contains workload's namespaces configs
// and rootNamespaces configs, caller should be responsible for controlling configs passed
// in.

                              "path": "/dev/stdout",
                              "log_format": {
                                "text_format_source": {