Add delete_host nomulus tool command

This is needed to delete an invalid host resulting from a previous bug.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=154757425

java/google/registry/tools/soy/DeleteHost.soy

@@ -0,0 +1,42 @@
+// 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.
+
+{namespace domain.registry.tools autoescape="strict"}
+
+/**
+ * Delete host request
+ */
+{template .deletehost}
+{@param hostName: string}
+{@param reason: string}
+{@param requestedByRegistrar: any}
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
+  <command>
+    <delete>
+      <host:delete
+       xmlns:host="urn:ietf:params:xml:ns:host-1.0">
+        <host:name>{$hostName}</host:name>
+      </host:delete>
+    </delete>
+    <extension>
+      <metadata:metadata xmlns:metadata="urn:google:params:xml:ns:metadata-1.0">
+        <metadata:reason>Deleted by registry administrator: {$reason}</metadata:reason>
+        <metadata:requestedByRegistrar>{$requestedByRegistrar}</metadata:requestedByRegistrar>
+      </metadata:metadata>
+    </extension>
+    <clTRID>RegistryTool</clTRID>
+  </command>
+</epp>
+{/template}