Add RegistryLockVerifyAction (#461)

* Add RegistryLockVerifyAction

The action takes two parameters
- isLock is a boolean, determining whether we're trying to lock or
unlock a domain
- lockVerificationCode is the UUID by which we'll look up the lock
object in question.

The lock in question must not be expired and must be in a valid lockable
/ unlockable state

* Some responses to CR

* Add slash and move test method

* Add more data and tests

* Fix screenshot

core/src/main/resources/google/registry/ui/soy/registrar/RegistryLockVerification.soy

@@ -0,0 +1,71 @@
+// Copyright 2019 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 registry.soy.registrar.registrylock.verification}
+
+
+/**
+ * Results page for a registry lock/unlock verification.
+ */
+{template .verificationPage}
+  {@param username: string} /** Arbitrary username to display. */
+  {@param analyticsConfig: [googleAnalyticsId: string|null]}
+  {@param success: bool}
+  {@param? errorMessage: string}
+  {@param? isLock: bool}
+  {@param? fullyQualifiedDomainName: string}
+  {call registry.soy.console.header}
+    {param app: 'registrar' /}
+    {param subtitle: 'Verify Registry Lock' /}
+    {param analyticsConfig: $analyticsConfig /}
+  {/call}
+  {call registry.soy.console.googlebar data="all" /}
+  <div id="reg-content-and-footer">
+    <div id="reg-content">
+      <h1>Registry Lock Verification</h1>
+      {if $success}
+        {call .success data="all" /}
+      {else}
+        {call .failure data="all" /}
+      {/if}
+      <h3><a href="/registrar">Return to Registrar Console</a></h3>
+    </div>
+    {call registry.soy.console.footer /}
+  </div>
+{/template}
+
+/**
+ * Result page for failure, e.g. the UUID was invalid
+ */
+{template .failure}
+  {@param? errorMessage: string}
+  <h2 class="{css('kd-errormessage')}">Failed: {if isNonnull($errorMessage)}
+      {$errorMessage}
+    {else}
+      Undefined error message
+    {/if}
+  </h2>
+{/template}
+
+/**
+ * Result page for a successful lock / unlock.
+ */
+{template .success}
+  {@param? isLock: bool}
+  {@param? fullyQualifiedDomainName: string}
+  <h3>
+    Success: {if $isLock}lock{else}unlock{/if} has been applied to {$fullyQualifiedDomainName}
+  </h3>
+{/template}
+