Add SettingsController cache reset to integration tests

[MAILPOET-1757]

tests/integration/Cron/Workers/KeyCheck/KeyCheckWorkerTest.php

@@ -13,6 +13,7 @@ use MailPoet\Cron\Workers\KeyCheck\KeyCheckWorkerMockImplementation as MockKeyCh
 
 class KeyCheckWorkerTest extends \MailPoetTest {
   function _before() {
+    parent::_before();
     $this->worker = new MockKeyCheckWorker();
   }
 
@@ -70,4 +71,4 @@ class KeyCheckWorkerTest extends \MailPoetTest {
     \ORM::raw_execute('TRUNCATE ' . Setting::$_table);
     \ORM::raw_execute('TRUNCATE ' . ScheduledTask::$_table);
   }
-}
+}

tests/integration/Cron/Workers/KeyCheck/PremiumKeyCheckTest.php

@@ -8,6 +8,7 @@ use MailPoet\Services\Bridge;
 
 class PremiumKeyCheckTest extends \MailPoetTest {
   function _before() {
+    parent::_before();
     $this->premium_key = '123457890abcdef';
     $this->worker = new PremiumKeyCheck(microtime(true));
   }

tests/integration/Cron/Workers/KeyCheck/SendingServiceKeyCheckTest.php

@@ -10,6 +10,7 @@ use MailPoet\Services\Bridge;
 
 class SendingServiceKeyCheckTest extends \MailPoetTest {
   function _before() {
+    parent::_before();
     $this->mss_key = 'some_key';
     $this->worker = new SendingServiceKeyCheck(microtime(true));
   }