Updates based on Arduino MQTT Client release

Author: sandeepmistry

Diff for: src/ArduinoIoTCloud.cpp

@@ -63,7 +63,7 @@ int ArduinoIoTCloudClass::begin(Client& net, String brokerAddress)
   }
   _bearSslClient = new BearSSLClient(net);
   _bearSslClient->setEccSlot(keySlot, ECCX08Cert.bytes(), ECCX08Cert.length());
-  _mqttClient = new MQTTClient(*_bearSslClient);
+  _mqttClient = new MqttClient(*_bearSslClient);
 
   // Begin function for the MQTTClient
   mqttClientBegin();

Diff for: src/ArduinoIoTCloud.h

@@ -1,7 +1,7 @@
 #ifndef ARDUINO_IOT_CLOUD_H
 #define ARDUINO_IOT_CLOUD_H
 
-#include <ArduinoMQTT.h>
+#include <ArduinoMqttClient.h>
 #include <ArduinoIoTCloudBearSSL.h>
 #include <ArduinoCloudThing.h>
 
@@ -96,7 +96,7 @@ class ArduinoIoTCloudClass {
          _brokerAddress;
   ArduinoCloudThing Thing;
   BearSSLClient* _bearSslClient;
-  MQTTClient* _mqttClient;
+  MqttClient* _mqttClient;
 
   // Class attribute to define MTTQ topics 2 for stdIn/out and 2 for data, in order to avoid getting previous pupblished payload
   String _stdinTopic;