Don't always require contacts in CreateDomainCommand (#2755)

If contacts are optional, they should be optional in the command too.

core/src/main/java/google/registry/tools/CreateDomainCommand.java

@@ -16,6 +16,7 @@ package google.registry.tools;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Strings.isNullOrEmpty;
+import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
 import static google.registry.pricing.PricingEngineProxy.getPricesForDomainName;
 import static google.registry.util.PreconditionsUtils.checkArgumentNotNull;
 import static org.joda.time.DateTimeZone.UTC;
@@ -23,6 +24,7 @@ import static org.joda.time.DateTimeZone.UTC;
 import com.beust.jcommander.Parameter;
 import com.beust.jcommander.Parameters;
 import com.google.template.soy.data.SoyMapData;
+import google.registry.model.common.FeatureFlag;
 import google.registry.model.pricing.PremiumPricingEngine.DomainPrices;
 import google.registry.tools.soy.DomainCreateSoyInfo;
 import google.registry.util.StringGenerator;
@@ -58,9 +60,15 @@ final class CreateDomainCommand extends CreateOrUpdateDomainCommand {
 
   @Override
   protected void initMutatingEppToolCommand() {
-    checkArgumentNotNull(registrant, "Registrant must be specified");
-    checkArgument(!admins.isEmpty(), "At least one admin must be specified");
-    checkArgument(!techs.isEmpty(), "At least one tech must be specified");
+    tm().transact(
+            () -> {
+              if (!FeatureFlag.isActiveNowOrElse(
+                  FeatureFlag.FeatureName.MINIMUM_DATASET_CONTACTS_OPTIONAL, false)) {
+                checkArgumentNotNull(registrant, "Registrant must be specified");
+                checkArgument(!admins.isEmpty(), "At least one admin must be specified");
+                checkArgument(!techs.isEmpty(), "At least one tech must be specified");
+              }
+            });
     if (isNullOrEmpty(password)) {
       password = passwordGenerator.createString(PASSWORD_LENGTH);
     }

core/src/main/resources/google/registry/tools/soy/DomainCreate.soy

@@ -20,9 +20,9 @@
   {@param domain: string}
   {@param period: int}
   {@param nameservers: list<string>}
-  {@param registrant: string}
-  {@param admins: list<string>}
-  {@param techs: list<string>}
+  {@param? registrant: string|null}
+  {@param? admins: list<string>|null}
+  {@param? techs: list<string>|null}
   {@param password: string}
   {@param? currency: string|null}
   {@param? price: string|null}
@@ -45,13 +45,19 @@
               {/for}
             </domain:ns>
           {/if}
-          <domain:registrant>{$registrant}</domain:registrant>
-          {for $admin in $admins}
-            <domain:contact type="admin">{$admin}</domain:contact>
-          {/for}
-          {for $tech in $techs}
-            <domain:contact type="tech">{$tech}</domain:contact>
-          {/for}
+          {if $registrant != null}
+            <domain:registrant>{$registrant}</domain:registrant>
+          {/if}
+          {if $admins != null}
+            {for $admin in $admins}
+              <domain:contact type="admin">{$admin}</domain:contact>
+            {/for}
+          {/if}
+          {if $techs != null}
+            {for $tech in $techs}
+              <domain:contact type="tech">{$tech}</domain:contact>
+            {/for}
+          {/if}
           <domain:authInfo>
             <domain:pw>{$password}</domain:pw>
           </domain:authInfo>