Create nomulus tool restore command

Create a nomulus tool restoreCommitLogs command.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=157103177

java/google/registry/tools/RestoreCommitLogsCommand.java

@@ -0,0 +1,65 @@
+// 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.tools;
+
+import com.beust.jcommander.Parameter;
+import com.beust.jcommander.Parameters;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.net.MediaType;
+import google.registry.backup.RestoreCommitLogsAction;
+import org.joda.time.DateTime;
+
+@Parameters(separators = " =", commandDescription = "Restore the commit logs.")
+class RestoreCommitLogsCommand implements ServerSideCommand {
+  private Connection connection;
+
+  @Parameter(
+    names = {"-d", "--dry_run"},
+    description = "Don't actually make any changes, just show what you would do."
+  )
+  private boolean dryRun = false;
+
+  @Parameter(
+    names = {"-f", "--from_time"},
+    description = "Time to start restoring from.",
+    required = true
+  )
+  private DateTime fromTime;
+
+  @Parameter(
+    names = {"-t", "--to_time"},
+    description = "Last commit diff timestamp to use when restoring."
+  )
+  private DateTime toTime;
+
+  @Override
+  public void setConnection(Connection connection) {
+    this.connection = connection;
+  }
+
+  @Override
+  public void run() throws Exception {
+    ImmutableMap.Builder<String, Object> params = new ImmutableMap.Builder<>();
+    params.put("dryRun", dryRun);
+    params.put("fromTime", fromTime);
+    if (toTime != null) {
+      params.put("toTime", toTime);
+    }
+    String response =
+        connection.send(
+            RestoreCommitLogsAction.PATH, params.build(), MediaType.PLAIN_TEXT_UTF_8, new byte[0]);
+    System.out.println(response);
+  }
+}