Adjust logging to catch sporadic PERF build failure

spring-webflux/src/test/resources/log4j2-test.xml

@@ -11,6 +11,7 @@
 
 		<!-- temporarily while we resolve random failures -->
 		<Logger name="org.springframework.web.reactive.socket.WebSocketIntegrationTests" level="debug" />
+		<Logger name="org.springframework.web.reactive.socket.adapter" level="trace" />
 
 		<Logger name="reactor" level="info" />
 		<Logger name="io.reactivex" level="info" />