FS-10493: [mod_callcenter] Replace core uuid with cc_instance_id taken from callcenter.conf.xml

conf/vanilla/autoload_configs/callcenter.conf.xml

@@ -2,6 +2,7 @@
   <settings>
     <!--<param name="odbc-dsn" value="dsn:user:pass"/>-->
     <!--<param name="dbname" value="/dev/shm/callcenter.db"/>-->
+    <!--<param name="cc-instance-id" value="single_box"/>-->
   </settings>
 
   <queues>

src/mod/applications/mod_callcenter/conf/autoload_configs/callcenter.conf.xml

@@ -3,6 +3,7 @@
     <!--<param name="odbc-dsn" value="dsn:user:pass"/>-->
     <!--<param name="dbname" value="/dev/shm/callcenter.db"/>-->
     <!--<param name="reserve-agents" value="true"/>-->
+    <!--<param name="cc-instance-id" value="single_box"/>-->
   </settings>
 
   <queues>