update analytics sample for env:flex (GoogleCloudPlatform#210)

Author: bshaffer

appengine/flexible/analytics/app.yaml

@@ -1,5 +1,5 @@
 runtime: php
-vm: true
+env: flex
 
 runtime_config:
-  document_root: web
+  document_root: web

appengine/flexible/analytics/tests/DeployTest.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Copyright 2016 Google Inc.
+ *
+ * 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 Google\Cloud\Samples\AppEngine\Analytics;
+
+use Google\Cloud\TestUtils\AppEngineDeploymentTrait;
+
+class DeployTest extends \PHPUnit_Framework_TestCase
+{
+    use AppEngineDeploymentTrait;
+
+    public function testIndex()
+    {
+        // Access the modules app top page.
+        $resp = $this->client->get('/');
+        $this->assertEquals('200', $resp->getStatusCode(),
+            'top page status code');
+        $this->assertContains('returned 200', (string) $resp->getBody(),
+            'top page content');
+    }
+}

appengine/flexible/analytics/tests/LocalTest.php

@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-namespace Google\Cloud\Test;
+namespace Google\Cloud\Samples\AppEngine\Analytics;
 
 use Silex\WebTestCase;