Add default subscriber profile in ROS 2 XML configuration (#910)

Signed-off-by: Mario Dominguez <mariodominguez@eprosima.com>

Author: Mario-DL

code/XMLTester.xml

@@ -2646,6 +2646,11 @@
         <historyMemoryPolicy>DYNAMIC</historyMemoryPolicy>
     </data_writer>
 
+    <!-- Default subscriber profile -->
+    <data_reader profile_name="default subscriber profile" is_default_profile="true">
+        <historyMemoryPolicy>DYNAMIC</historyMemoryPolicy>
+    </data_reader>
+
     <!-- Publisher profile for topic helloworld -->
     <data_writer profile_name="helloworld">
         <qos>