NOREF Disable Distributed Tracing by default

This disables distributed tracing in our default NewRelic configuration as it can be expensive. This setting can be updated in the `.ini` file to enable it if it is useful

newrelic.ini

@@ -189,7 +189,7 @@ thread_profiler.enabled = true
 # through your distributed system. For more information, please
 # consult our distributed tracing planning guide.
 # https://docs.newrelic.com/docs/transition-guide-distributed-tracing
-distributed_tracing.enabled = true
+distributed_tracing.enabled = false
 
 # Enabling logging
 application_logging.enabled=true