Get basic integ test working... fixes broken groupids etc.

Note currently this just installs the plugin. we need to add some
more logic to really get some kind of integ test working with rest tests.
e.g. we need to install the license plugin. I will look into this as a followup.

Original commit: elastic/x-pack-elasticsearch@ebc507a1fb

pom.xml

@@ -15,7 +15,7 @@
     </scm>
 
     <parent>
-        <groupId>org.elasticsearch</groupId>
+        <groupId>org.elasticsearch.plugin</groupId>
         <artifactId>elasticsearch-plugin</artifactId>
         <version>2.0.0-SNAPSHOT</version>
     </parent>
@@ -73,7 +73,7 @@
         </dependency>
         <dependency>
             <groupId>org.elasticsearch</groupId>
-            <artifactId>securemock</artifactId>
+            <artifactId>elasticsearch-securemock</artifactId>
             <version>1.0-SNAPSHOT</version>
             <scope>test</scope>
         </dependency>
@@ -151,7 +151,6 @@
                 <artifactId>maven-assembly-plugin</artifactId>
                 <configuration>
                     <attach>false</attach>
-                    <finalName>shield-${project.version}</finalName>
                 </configuration>
             </plugin>