Add flag to delete domain immediately in nomulus too

We've already had the need to do this on a few occasions, so it's best to make
it easy rather than requiring hand-generated XML all the time.

Also normalizes the boolean --registrar_request parameter to not have arity=1.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=198093829

java/google/registry/tools/DeleteDomainCommand.java

@@ -35,6 +35,11 @@ final class DeleteDomainCommand extends MutatingEppToolCommand {
       required = true)
   private String domainName;
 
+  @Parameter(
+      names = {"--immediately"},
+      description = "Whether to bypass grace periods and delete the domain immediately.")
+  private boolean immediately = false;
+
   @Parameter(
       names = {"--reason"},
       description = "Reason for the change.",
@@ -43,15 +48,19 @@ final class DeleteDomainCommand extends MutatingEppToolCommand {
 
   @Parameter(
       names = {"--registrar_request"},
-      description = "Whether the change was requested by a registrar.",
-      arity = 1)
+      description = "Whether the change was requested by a registrar.")
   private boolean requestedByRegistrar = false;
 
   @Override
   protected void initMutatingEppToolCommand() {
+    if (immediately) {
+      // Immediate deletion is accomplished using the superuser extension.
+      superuser = true;
+    }
     setSoyTemplate(DeleteDomainSoyInfo.getInstance(), DeleteDomainSoyInfo.DELETEDOMAIN);
     addSoyRecord(clientId, new SoyMapData(
         "domainName", domainName,
+        "immediately", immediately,
         "reason", reason,
         "requestedByRegistrar", requestedByRegistrar));
   }