Add delay between setup and startPersistentSession

Author: gmtt

integration-test/mqtt/mqtt_system_test.c

@@ -1381,6 +1381,12 @@ TEST( coreMQTT_Integration, test_MQTT_Restore_Session_Incoming_Duplicate_PubRel
  */
 void test_MQTT_Resend_Unacked_Publish_QoS1( void )
 {
+    if( testingAgainstAWS )
+    {
+        /* Add 30 seconds of delay */
+        Clock_SleepMs( 30000 );
+    }
+
     /* Start a persistent session with the broker. */
     startPersistentSession();
 
@@ -1410,6 +1416,12 @@ void test_MQTT_Resend_Unacked_Publish_QoS1( void )
     /* Reset the transport receive function in the context. */
     context.transportInterface.recv = Openssl_Recv;
 
+    if( testingAgainstAWS )
+    {
+        /* Add 30 seconds of delay */
+        Clock_SleepMs( 30000 );
+    }
+
     /* We will re-establish an MQTT over TLS connection with the broker to restore
      * the persistent session. */
     resumePersistentSession();
@@ -1534,6 +1546,12 @@ TEST( coreMQTT_Integration, test_MQTT_Resend_Unacked_Publish_QoS2 )
  */
 void test_MQTT_Restore_Session_Duplicate_Incoming_Publish_Qos1( void )
 {
+    if( testingAgainstAWS )
+    {
+        /* Add 30 seconds of delay */
+        Clock_SleepMs( 30000 );
+    }
+
     /* Start a persistent session with the broker. */
     startPersistentSession();