Create MqttAsyncClient() throw a ConcurrentModificationException

Bug exists Release Version 1.1.0 ( Master Branch) And I check the latest version 1.2.5 also exists。

When create MqttAsyncClient() throw a ConcurrentModificationException in API23. Caused by LoggerFactory.getLogger() -> ... -> ClassLoader.getResourceAsStream()...

MqttAsyncClient:
```
Logger log = LoggerFactory.getLogger(LoggerFactory.MQTT_CLIENT_MSG_CAT, CLASS_NAME);
```

Class.getResourceAsStream is very slow on Android, should instead load from Android Resource Manager.

Also, Android **API 23** has a race condition with Class.getResourceAsStream that causes a ConcurrentModificationException

```
java.lang.ExceptionInInitializerError:
com.meitu.mqtt.manager.jni.MTMqttClient.create(MTMqttClient.java:122)
......
Caused by:
java.util.ConcurrentModificationException:
java.util.HashMap$HashIterator.nextEntry(HashMap.java:787)
java.util.HashMap$KeyIterator.next(HashMap.java:814)
java.util.jar.JarVerifier.readCertificates(JarVerifier.java:266)
java.util.jar.JarFile.getInputStream(JarFile.java:380)
libcore.net.url.JarURLConnectionImpl.getInputStream(JarURLConnectionImpl.java:222)
java.net.URL.openStream(URL.java:470)
java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:444)
java.util.ResourceBundle.handleGetBundle(ResourceBundle.java:515)
java.util.ResourceBundle.handleGetBundle(ResourceBundle.java:542)
java.util.ResourceBundle.handleGetBundle(ResourceBundle.java:542)
java.util.ResourceBundle.getBundle(ResourceBundle.java:228)
java.util.ResourceBundle.getBundle(ResourceBundle.java:139)
org.eclipse.paho.client.mqttv3.logging.b.a(LoggerFactory.java:73)
org.eclipse.paho.client.mqttv3.MqttAsyncClient.(MqttAsyncClient.java:89)
com.meitu.mqtt.manager.jni.MTMqttClient.create(MTMqttClient.java:122)
com.meitu.mqtt.manager.jni.MTMqttClient.(MTMqttClient.java:95)
com.meitu.mqtt.manager.flow.a.a(IMConnector.kt:116)
com.meitu.mqtt.manager.flow.b$b.run(IMFlowExecutor.kt:79)
android.os.Handler.handleCallback(Handler.java:739)
android.os.Handler.dispatchMessage(Handler.java:95)
android.os.Looper.loop(Looper.java:159)
android.os.HandlerThread.run(HandlerThread.java:61)
```

the same problem:
https://github.com/firebase/firebase-android-sdk/issues/1601

Start with LoggerFactory.java around line 73 and MqttAsyncClient.java around line 89, then reproduce creation on Android API 23 using the reported stack trace. Investigate the logger's ResourceBundle/ClassLoader lookup and the Android Resource Manager alternative mentioned in the issue. Done means creating MqttAsyncClient no longer triggers the ConcurrentModificationException on API 23.

Written by the indexing model from the issue text.