Format src/test/resources/logback.xml configuration file.

Author: jxblum

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

@@ -18,9 +18,7 @@
     </appender>
 
     <logger name="ch.qos.logback" level="${logback.log.level:-ERROR}"/>
-
     <logger name="org.apache.geode" level="${logback.log.level:-ERROR}"/>
-
     <logger name="org.springframework" level="${logback.log.level:-ERROR}"/>
 
     <logger name="org.springframework.data.gemfire.tests.logging.slf4j.logback.TestAppenderUnitTests" level="WARN">