Failing OnOffOpenTracingTestCase when -Dnode0 is defined to non-localhost address

The OnOffOpenTracingTestCase fails when -Dnode0 is specified with non-localhost address.

The reason for this is that test reads value of the HTTP response from server and searches for java.lang.NoClassDefFoundError: Lio/opentracing/Tracer value to check that OpenTracing is not available in this case. This works just fine when server is running with localhost address as stack-trace for servlet deployments is by default set to "local-only" value. Although, when server runs with non-localhost IP address, the stacktrace is not included in HTTP response anymore.