mv com/google/domain/registry google/registry

This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.

javatests/google/registry/server/HealthzServlet.java

@@ -0,0 +1,36 @@
+// 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 com.google.domain.registry.server;
+
+import static com.google.common.net.MediaType.PLAIN_TEXT_UTF_8;
+import static javax.servlet.http.HttpServletResponse.SC_OK;
+
+import java.io.IOException;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/** Servlet for responding to {@code /healthz} requests. */
+public final class HealthzServlet extends HttpServlet {
+
+  @Override
+  public void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
+    rsp.setStatus(SC_OK);
+    rsp.setContentType(PLAIN_TEXT_UTF_8.toString());
+    rsp.getWriter().write("ok\n");
+    rsp.getWriter().close();
+  }
+}