Add LRP TLD states to Registry and *_tld tools

Also had to add an EnumParameter class to support
List<T extends Enum<T>>, as these aren't natively supported by
JCommander (although single Enum parameters are.)

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129464699

javatests/google/registry/tools/params/EnumParameterTest.java

@@ -0,0 +1,49 @@
+// Copyright 2016 The Domain Registry 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.tools.params;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import google.registry.model.registry.Registry.TldState;
+import google.registry.testing.ExceptionRule;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Unit tests for {@link EnumParameter}. */
+@RunWith(JUnit4.class)
+public class EnumParameterTest {
+  
+  @Rule
+  public final ExceptionRule thrown = new ExceptionRule();
+
+  // There's no additional functionality exposed by this (or any other) EnumParameter, but using
+  // this in the test as EnumParameter is abstract.
+  private final TldStateParameter instance = new TldStateParameter();
+
+  @Test
+  public void testSuccess_convertEnum() throws Exception {
+    assertThat(instance.convert("PREDELEGATION")).isEqualTo(TldState.PREDELEGATION);
+  }
+
+  @Test
+  public void testFailure_badValue() throws Exception {
+    thrown.expect(
+        IllegalArgumentException.class,
+        "No enum constant google.registry.model.registry.Registry.TldState.GENERAL_SUNRUSH");
+    instance.convert("GENERAL_SUNRUSH");
+  }
+}