Public flushEventsQueue (#601)

- change flushEventsQueueImmediately to public

Author: electrostat

mapbox/libandroid-telemetry/src/main/java/com/mapbox/services/android/telemetry/MapboxTelemetry.java

@@ -646,7 +646,7 @@ private void addGeneralNavigationMetadataTo(Hashtable<String, Object> eventWithA
   /**
    * Immediately attempt to send all events data in the queue to the server.
    */
-  private void flushEventsQueueImmediately(boolean hasTurnstileEvent) {
+  public void flushEventsQueueImmediately(boolean hasTurnstileEvent) {
     if (initialized && events.size() > 0) {
       if (ConnectivityReceiver.isConnected(context)) {
         if (hasTurnstileEvent || isTelemetryEnabled()) {