message: downgrade a warning when parsing kube configs using service accounts
  caused a lot of failed to load client identity
diff: @@ -127,7 +127,7 @@ pub async fn create_client_builder(options: ConfigOptions) -> Result<(ClientBuil
  client_builder = client_builder.identity(id);
  }
  Err(e) => {
  - warn!("failed to load client identity from kube config: {}", e);
  + debug!("failed to load client identity from kube config: {}", e);
  // last resort only if configs ask for it, and no client certs
  if let Some(true) = loader.cluster.insecure_skip_tls_verify {
  client_builder = client_builder.danger_accept_invalid_certs(true);
  