[gemfire] update gemfire and re-enable.

* enabling gemfire module and updating to release 7.0.2
* verified that there are no failures while trying to resolve gemfire repo.
* fixed an NPE.

Amending-Author: Sean Busbey <sean.busbey@gmail.com>
Signed-off-by: Sean Busbey <sean.busbey@gmail.com>

gemfire/pom.xml

@@ -15,7 +15,7 @@
     <dependency>
       <groupId>com.gemstone.gemfire</groupId>
       <artifactId>gemfire</artifactId>
-      <version>6.6</version>
+      <version>7.0.2</version>
     </dependency>
     <dependency>
       <groupId>com.yahoo.ycsb</groupId>
@@ -27,7 +27,7 @@
   <repositories>
     <repository>
       <id>gemstone</id>
-      <url>http://dist.gemstone.com.s3.amazonaws.com/maven/release/</url>
+      <url>http://dist.gemstone.com.s3.amazonaws.com/maven/release</url>
     </repository>
   </repositories>	
  

pom.xml

@@ -77,6 +77,7 @@
     <module>accumulo</module>
     <module>dynamodb</module>
     <module>elasticsearch</module>
+    <module>gemfire</module>
     <module>infinispan</module>
     <module>jdbc</module>
     <module>mongodb</module>
@@ -86,7 +87,6 @@
     <module>distribution</module>
     <!--<module>mapkeeper</module>-->
     <!--module>nosqldb</module-->
-    <!--<module>gemfire</module>-->
     <module>couchbase</module>
   </modules>