Ref apache#438: Re-add the integration test for camel-docker (apache#525)

Author: essobedo

tests/features/pom.xml

@@ -69,8 +69,7 @@
         <module>camel-cxf</module>
         <module>camel-disruptor</module>
         <module>camel-dns</module>
-        <!-- TODO: Fix the integration test and re-add it https://github.com/apache/camel-karaf/issues/438 -->
-        <!--module>camel-docker</module-->
+        <module>camel-docker</module>
         <module>camel-drill</module>
         <module>camel-ehcache</module>
         <module>camel-elasticsearch</module>