YARN-2179. Fix version in sharedcachemanager-pom.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager/pom.xml

@@ -17,11 +17,11 @@
   <parent>
     <artifactId>hadoop-yarn-server</artifactId>
     <groupId>org.apache.hadoop</groupId>
-    <version>3.0.0-SNAPSHOT</version>
+    <version>2.6.0-SNAPSHOT</version>
   </parent>
   <groupId>org.apache.hadoop</groupId>
   <artifactId>hadoop-yarn-server-sharedcachemanager</artifactId>
-  <version>3.0.0-SNAPSHOT</version>
+  <version>2.6.0-SNAPSHOT</version>
   <name>hadoop-yarn-server-sharedcachemanager</name>
 
   <properties>