log4j2 upgraded to beta9

Author: emacarron

pom.xml

@@ -163,7 +163,7 @@
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-core</artifactId>
-      <version>2.0-beta8</version>
+      <version>2.0-beta9</version>
       <optional>true</optional>
     </dependency>
     <dependency>