Add support for a domain transfer request superuser EPP extension

Allow superusers to change the transfer period to zero years and allow
superusers to change the automatic transfer length.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167598314

java/google/registry/flows/exceptions/InvalidTransferPeriodValueException.java

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+// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.flows.exceptions;
+
+import google.registry.flows.EppException.ParameterValuePolicyErrorException;
+
+/** Domain transfer period must be zero or one year when using the superuser EPP extension. */
+public class InvalidTransferPeriodValueException extends ParameterValuePolicyErrorException {
+  public InvalidTransferPeriodValueException() {
+    super(
+        "Domain transfer period must be zero or one year when using the superuser EPP extension.");
+  }
+}

java/google/registry/flows/exceptions/SuperuserExtensionAndAutorenewGracePeriodException.java

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+// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.flows.exceptions;
+
+import google.registry.flows.EppException.StatusProhibitsOperationException;
+
+/** Superuser extensions cannot be used during autorenew grace periods. */
+public class SuperuserExtensionAndAutorenewGracePeriodException extends
+    StatusProhibitsOperationException {
+  public SuperuserExtensionAndAutorenewGracePeriodException() {
+    super("Superuser extensions cannot be used during autorenew grace periods.");
+  }
+}

java/google/registry/flows/exceptions/TransferPeriodZeroAndFeeTransferExtensionException.java

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+// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.flows.exceptions;
+
+import google.registry.flows.EppException.StatusProhibitsOperationException;
+
+/** Domain transfer period cannot be zero when using the fee transfer extension. */
+public class TransferPeriodZeroAndFeeTransferExtensionException
+    extends StatusProhibitsOperationException {
+  public TransferPeriodZeroAndFeeTransferExtensionException() {
+    super("Domain transfer period cannot be zero when using the fee transfer extension.");
+  }
+}

java/google/registry/flows/exceptions/UnauthorizedForSuperuserExtensionException.java

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+// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.flows.exceptions;
+
+import google.registry.flows.EppException.AuthorizationErrorException;
+
+/** Superuser extension used by non-superuser or not passed by tool. */
+public class UnauthorizedForSuperuserExtensionException extends AuthorizationErrorException {
+  public UnauthorizedForSuperuserExtensionException() {
+    super("Superuser extension used by non-superuser or not passed by tool.");
+  }
+}