Add [] to export domain lists to GCS

The ExportDomainListsAction [] has a cron entry that runs it twice per day.  It exports one flat text file per real (non-test) TLD to the "{project-id}-domain-lists" bucket in Google Cloud Storage, overwriting the existing ones in place.  Each file is a newline-delimited list of active (non-deleted) domains in that TLD.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116767987

java/com/google/domain/registry/env/common/backend/WEB-INF/web.xml

@@ -364,6 +364,15 @@
     <url-pattern>/_dr/task/syncGroupMembers</url-pattern>
   </servlet-mapping>
 
+  <servlet>
+    <servlet-name>export-domain-lists</servlet-name>
+    <servlet-class>com.google.domain.registry.module.backend.BackendServlet</servlet-class>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>export-domain-lists</servlet-name>
+    <url-pattern>/_dr/task/exportDomainLists</url-pattern>
+  </servlet-mapping>
+
   <!--  Mapreduce to delete the specified contact resource if it is not referenced by any domains. -->
   <servlet>
     <description>

java/com/google/domain/registry/env/production/default/WEB-INF/cron.xml

@@ -124,6 +124,15 @@
     <target>backend</target>
   </cron>
 
+  <cron>
+    <url><![CDATA[/_dr/task/exportDomainLists]]></url>
+    <description>
+      This job exports lists of all active domain names to Google Cloud Storage.
+    </description>
+    <schedule>every 12 hours synchronized</schedule>
+    <target>backend</target>
+  </cron>
+
   <cron>
     <url><![CDATA[/_dr/cron/fanout?queue=export-snapshot&endpoint=/_dr/task/exportSnapshot&runInEmpty]]></url>
     <description>