Add the App Engine service used in the Action definition

Our goal is to be able to address every Action by looking at the class itself, and to make it clearer at a glance what you need to access the Action's endpoint

Currently, we can know from the @Action annotation:
- the endpoint path
- the Method needed
- the authentication level needed

This CL adds the service where the Action is hosted, which also translates to the URL.

NOTE - currently we don't have any Action hosted on multiple services. I don't think we will ever need it (since they do the same thing no matter which service they are on, so why host it twice?), but if we do we'll have to update the code to allow it.

The next step after this is to make sure all the @Parameters are defined on the Action itself, and then we will be able to craft access to the endpoint programatically (or at least verify at run-time we crafted a correct URL)

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=229375735

java/google/registry/export/BackupDatastoreAction.java

@@ -43,6 +43,7 @@ import javax.inject.Inject;
  * </ol>
  */
 @Action(
+    service = Action.Service.BACKEND,
     path = BackupDatastoreAction.PATH,
     method = POST,
     automaticallyPrintOk = true,

java/google/registry/export/BigqueryPollJobAction.java

@@ -47,11 +47,11 @@ import org.joda.time.Duration;
  * completion state; otherwise it will return a failure code so that the task will be retried.
  */
 @Action(
-  path = BigqueryPollJobAction.PATH,
-  method = {Action.Method.GET, Action.Method.POST},
-  automaticallyPrintOk = true,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = BigqueryPollJobAction.PATH,
+    method = {Action.Method.GET, Action.Method.POST},
+    automaticallyPrintOk = true,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class BigqueryPollJobAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();

java/google/registry/export/CheckBackupAction.java

@@ -55,6 +55,7 @@ import org.joda.time.format.PeriodFormat;
  * Action that checks the status of a snapshot, and if complete, trigger loading it into BigQuery.
  */
 @Action(
+    service = Action.Service.BACKEND,
     path = CheckBackupAction.PATH,
     method = {POST, GET},
     automaticallyPrintOk = true,

java/google/registry/export/CheckSnapshotAction.java

@@ -47,11 +47,11 @@ import org.joda.time.format.PeriodFormat;
  * Action that checks the status of a snapshot, and if complete, trigger loading it into BigQuery.
  */
 @Action(
-  path = CheckSnapshotAction.PATH,
-  method = {POST, GET},
-  automaticallyPrintOk = true,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = CheckSnapshotAction.PATH,
+    method = {POST, GET},
+    automaticallyPrintOk = true,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class CheckSnapshotAction implements Runnable {
 
   /** Parameter names for passing parameters into this action. */

java/google/registry/export/ExportDomainListsAction.java

@@ -61,7 +61,11 @@ import org.joda.time.DateTime;
  * <p>Each TLD's active domain names are exported as a newline-delimited flat text file with the
  * name TLD.txt into the domain-lists bucket. Note that this overwrites the files in place.
  */
-@Action(path = "/_dr/task/exportDomainLists", method = POST, auth = Auth.AUTH_INTERNAL_ONLY)
+@Action(
+    service = Action.Service.BACKEND,
+    path = "/_dr/task/exportDomainLists",
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class ExportDomainListsAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();

java/google/registry/export/ExportPremiumTermsAction.java

@@ -45,7 +45,11 @@ import java.util.SortedSet;
 import javax.inject.Inject;
 
 /** Action that exports the premium terms list for a TLD to Google Drive. */
-@Action(path = "/_dr/task/exportPremiumTerms", method = POST, auth = Auth.AUTH_INTERNAL_ONLY)
+@Action(
+    service = Action.Service.BACKEND,
+    path = "/_dr/task/exportPremiumTerms",
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class ExportPremiumTermsAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();

java/google/registry/export/ExportReservedTermsAction.java

@@ -34,10 +34,10 @@ import javax.inject.Inject;
 
 /** Action that exports the publicly viewable reserved terms list for a TLD to Google Drive. */
 @Action(
-  path = "/_dr/task/exportReservedTerms",
-  method = POST,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = "/_dr/task/exportReservedTerms",
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class ExportReservedTermsAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();

java/google/registry/export/ExportSnapshotAction.java

@@ -39,11 +39,11 @@ import javax.inject.Inject;
  * </ol>
  */
 @Action(
-  path = ExportSnapshotAction.PATH,
-  method = POST,
-  automaticallyPrintOk = true,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = ExportSnapshotAction.PATH,
+    method = POST,
+    automaticallyPrintOk = true,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class ExportSnapshotAction implements Runnable {
 
   /** Queue to use for enqueuing the task that will actually launch the backup. */

java/google/registry/export/LoadSnapshotAction.java

@@ -51,10 +51,10 @@ import org.joda.time.DateTime;
 
 /** Action to load a Datastore snapshot from Google Cloud Storage into BigQuery. */
 @Action(
-  path = LoadSnapshotAction.PATH,
-  method = POST,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = LoadSnapshotAction.PATH,
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class LoadSnapshotAction implements Runnable {
 
   /** Parameter names for passing parameters into the servlet. */

java/google/registry/export/SyncGroupMembersAction.java

@@ -52,10 +52,10 @@ import javax.inject.Inject;
  * <p>This uses the <a href="https://developers.google.com/admin-sdk/directory/">Directory API</a>.
  */
 @Action(
-  path = "/_dr/task/syncGroupMembers",
-  method = POST,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = "/_dr/task/syncGroupMembers",
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public final class SyncGroupMembersAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();

java/google/registry/export/UpdateSnapshotViewAction.java

@@ -35,7 +35,11 @@ import java.io.IOException;
 import javax.inject.Inject;
 
 /** Update a well-known view to point at a certain Datastore snapshot table in BigQuery. */
-@Action(path = UpdateSnapshotViewAction.PATH, method = POST, auth = Auth.AUTH_INTERNAL_ONLY)
+@Action(
+    service = Action.Service.BACKEND,
+    path = UpdateSnapshotViewAction.PATH,
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class UpdateSnapshotViewAction implements Runnable {
 
   /** Headers for passing parameters into the servlet. */

java/google/registry/export/UploadDatastoreBackupAction.java

@@ -48,7 +48,11 @@ import java.io.IOException;
 import javax.inject.Inject;
 
 /** Action to load a Datastore backup from Google Cloud Storage into BigQuery. */
-@Action(path = UploadDatastoreBackupAction.PATH, method = POST, auth = Auth.AUTH_INTERNAL_ONLY)
+@Action(
+    service = Action.Service.BACKEND,
+    path = UploadDatastoreBackupAction.PATH,
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class UploadDatastoreBackupAction implements Runnable {
 
   /** Parameter names for passing parameters into the servlet. */

java/google/registry/export/sheet/SyncRegistrarsSheetAction.java

@@ -57,10 +57,10 @@ import org.joda.time.Duration;
  * @see SyncRegistrarsSheet
  */
 @Action(
-  path = SyncRegistrarsSheetAction.PATH,
-  method = POST,
-  auth = Auth.AUTH_INTERNAL_ONLY
-)
+    service = Action.Service.BACKEND,
+    path = SyncRegistrarsSheetAction.PATH,
+    method = POST,
+    auth = Auth.AUTH_INTERNAL_ONLY)
 public class SyncRegistrarsSheetAction implements Runnable {
 
   private enum Result {