Declare 'org.jgroups' Logger configuration in JUL, Log4j and Logback properties/XML configuration files.

spring-data-geode-test/src/test/resources/java-util-logging.properties

@@ -1,6 +1,7 @@
 # java.util.logging (JUL) configuration
 
 org.apache=ERROR
+org.jgroups=ERROR
 org.springframework=ERROR
 org.springframework.data.gemfire.listener.adapter.ContinuousQueryListenerAdapter=OFF
 org.springframework.data.gemfire.listener.adapter.ContinuousQueryListenerAdapter.useParentHandlers=false

spring-data-geode-test/src/test/resources/log4j2-test.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <Configuration status="error">
 	<Appenders>
 		<Console name="Console" target="SYSTEM_OUT">
@@ -10,6 +11,7 @@
 	</Appenders>
 	<Loggers>
 		<Logger name="org.apache.geode" level="error"/>
+		<Logger name="org.jgroups" level="error"/>
 		<Logger name="org.springframework" level="error"/>
 		<Logger name="org.springframework.data.gemfire.listener.adapter.ContinuousQueryListenerAdapter" level="off" additivity="false"/>
 		<Logger name="org.springframework.data.gemfire.support.SpringContextBootstrappingInitializer" level="off" additivity="false"/>

spring-data-geode-test/src/test/resources/logback.xml

@@ -18,6 +18,7 @@
     </appender>
 
     <logger name="ch.qos.logback" level="${logback.log.level:-ERROR}"/>
+    <logger name="org.jgroups" level="logback.log.level:-ERROR}"/>
     <logger name="org.apache.geode" level="${logback.log.level:-ERROR}"/>
     <logger name="org.springframework" level="${logback.log.level:-ERROR}"/>