Use the same version of jackson as Alien

Author: vuminhkh

pom.xml

@@ -11,7 +11,7 @@
 
     <properties>
         <elasticsearch.version>1.7.0</elasticsearch.version>
-        <jackson.version>2.0.4</jackson.version>
+        <jackson.version>2.3.1</jackson.version>
         <spring.version>3.1.0.RELEASE</spring.version>
         <junit.version>4.10</junit.version>