Use zip_rule() for EAR/WAR deploy archives

These build rules allow Bazel to generate the .ear and .war files which
appcfg.sh (a tool that comes with the App Engine SDK) can then use to
perform a deployment.

Included in this CL are configurations for five separate production
environments: production, sandbox, alpha, crash, and local.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129163010

java/google/registry/builddefs/registry_ear_file.bzl

@@ -0,0 +1,54 @@
+# 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.
+
+"""Build macro for creating App Engine EAR archives for Domain Registry."""
+
+load("//java/google/registry/builddefs:defs.bzl", "ZIPPER")
+
+def registry_ear_file(name, out, configs, wars, **kwargs):
+  """Creates an EAR archive by combining WAR archives."""
+  cmd = [
+      "set -e",
+      "repo=$$(pwd)",
+      "zipper=$$repo/$(location %s)" % ZIPPER,
+      "tmp=$$(mktemp -d $${TMPDIR:-/tmp}/registry_ear_file.XXXXXXXXXX)",
+      "cd $${tmp}",
+  ]
+  for target, dest in configs.items():
+    cmd += [
+        "mkdir -p $${tmp}/$$(dirname %s)" % dest,
+        "ln -s $${repo}/$(location %s) $${tmp}/%s" % (target, dest),
+    ]
+  for target, dest in wars.items():
+    cmd += [
+        "mkdir " + dest,
+        "cd " + dest,
+        "$${zipper} x $${repo}/$(location %s)" % target,
+        "cd ..",
+    ]
+  cmd += [
+      ("find . | sed 1d | cut -c 3- | LC_ALL=C sort" +
+       " | xargs $${zipper} cC $${repo}/$@"),
+      "cd $${repo}",
+      "rm -rf $${tmp}",
+  ]
+  native.genrule(
+      name = name,
+      srcs = configs.keys() + wars.keys(),
+      outs = [out],
+      cmd = "\n".join(cmd),
+      tools = [ZIPPER],
+      message = "Generating EAR archive",
+      **kwargs
+  )