Add HelloWorld Servlet

Change-Id: I1574df9a34f49e55a994481c4a52ee5f778b7c2c
diff --git a/pom.xml b/pom.xml
index e6f444a..c4732c1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,6 +37,7 @@
         <configuration>
           <archive>
             <manifestEntries>
+              <Gerrit-HttpModule>com.googlesource.gerrit.plugins.cookbook.HttpModule</Gerrit-HttpModule>
               <Gerrit-SshModule>com.googlesource.gerrit.plugins.cookbook.SshModule</Gerrit-SshModule>
 
               <Implementation-Vendor>Gerrit Code Review</Implementation-Vendor>