Bump CDH version for the Hadoop 2 profile to 4.1.2

pom.xml

@@ -54,6 +54,7 @@
     <akka.version>2.0.3</akka.version>
     <spray.version>1.0-M2.1</spray.version>
     <slf4j.version>1.6.1</slf4j.version>
+    <cdh.version>4.1.2</cdh.version>
   </properties>
 
   <repositories>
@@ -504,12 +505,12 @@
           <dependency>
             <groupId>org.apache.hadoop</groupId>
             <artifactId>hadoop-core</artifactId>
-            <version>2.0.0-mr1-cdh4.1.1</version>
+            <version>2.0.0-mr1-cdh${cdh.version}</version>
           </dependency>
           <dependency>
             <groupId>org.apache.hadoop</groupId>
             <artifactId>hadoop-client</artifactId>
-            <version>2.0.0-mr1-cdh4.1.1</version>
+            <version>2.0.0-mr1-cdh${cdh.version}</version>
           </dependency>
         </dependencies>
       </dependencyManagement>