Switch to using slf4j/logback for logging.

We still compile modules against commons-logging but all runtime logging and samples will use logback

itest/context/src/test/resources/log4j.properties

@@ -1,12 +0,0 @@
-# Logging
-#
-
-log4j.rootLogger=WARN, stdout
-
-log4j.appender.stdout=org.apache.log4j.ConsoleAppender
-log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
-log4j.appender.stdout.layout.ConversionPattern=[%p,%c{1}] %m%n
-
-log4j.logger.org.springframework.security=WARN
-log4j.logger.org.springframework.ldap=WARN
-log4j.logger.org.apache.directory=ERROR

itest/context/src/test/resources/logback-test.xml

@@ -0,0 +1,14 @@
+<configuration>
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+    </encoder>
+  </appender>
+
+  <logger name="org.apache.directory" level="WARN"/>
+
+  <root level="DEBUG">
+    <appender-ref ref="STDOUT" />
+  </root>
+
+</configuration>