Add event data integrity test

tests/behat/features/event_verification.feature

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+Feature: The application managers are concerned with correct data ending up in the event stream
+  In order to ensure no sensitive data ends up in the event stream
+  As an administrator
+  I must check the payload of the events for presence of sensitive data
+
+  Scenario: Provision an institution and a user to promote later on by an authorized institution
+    Given institution "institution-a.example.com" can "use_ra" from institution "institution-a.example.com"
+    And institution "institution-a.example.com" can "select_raa" from institution "institution-a.example.com"
+    And institution "institution-d.example.com" can "use_ra" from institution "institution-a.example.com"
+    And a user "Jane Toppan" identified by "urn:collab:person:institution-a.example.com:jane-a-ra" from institution "institution-a.example.com"
+    And the user "urn:collab:person:institution-a.example.com:jane-a-ra" has a vetted "yubikey"
+    And the user "urn:collab:person:institution-a.example.com:jane-a-ra" has the role "ra" for institution "institution-a.example.com"
+
+  Scenario: RA user can vet a token from an institution it is RA for
+    Given I am logged in into the selfservice portal as "joe-a1"
+    And I register a new SMS token
+    And I verify my e-mail address
+    When I am logged in into the ra portal as "jane-a-ra" with a "yubikey" token
+    And I vet the last added second factor
+   Then the resulting "SecondFactorVetted" event should not contain "common_name"
+   And the resulting "SecondFactorVetted" event should not contain "vetting_type"
+   And the resulting "SecondFactorVetted" event should not contain "document_number"
+   And the resulting "SecondFactorVetted" event should contain "name_id"

tests/behat/features/src/Repository/EventStreamRepository.php

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+<?php
+
+namespace Surfnet\StepupBehat\Repository;
+
+use PDO;
+
+/**
+ * A poor mans repository, a pdo connection to the test database is established in the constructor
+ */
+class EventStreamRepository
+{
+    /**
+     * @var PDO
+     */
+    private $connection;
+
+    public function __construct()
+    {
+        // Settings
+        $dbUser = 'root';
+        $dbPassword = 'password';
+        $dbName = 'middleware_test';
+        $dsn = 'mysql:host=127.0.0.1;dbname=%s';
+        // Open a PDO connection
+        $this->connection = new PDO(sprintf($dsn, $dbName), $dbUser, $dbPassword);
+    }
+
+    public function findLatestByEventName(string $name): array
+    {
+        $sql = 'SELECT * FROM `event_stream` WHERE type LIKE CONCAT("%", :name) ORDER BY recorded_on DESC LIMIT 1';
+        $statement = $this->connection->exec($sql);
+        $statement->execute(['name' => $name]);
+        return $statement->fetch();
+    }
+}