replace some entity shortcut by fqdn

* ChillPerson:Person
* ChillMain:Center
* ChillActivity:Activity

src/Bundle/ChillPersonBundle/Tests/Controller/PersonControllerUpdateTest.php

@@ -58,7 +58,7 @@ final class PersonControllerUpdateTest extends WebTestCase
         $this->em = self::$kernel->getContainer()
             ->get('doctrine.orm.entity_manager');
 
-        $center = $this->em->getRepository('ChillMainBundle:Center')
+        $center = $this->em->getRepository(\Chill\MainBundle\Entity\Center::class)
             ->findOneBy(['name' => 'Center A']);
 
         $this->person = (new Person())
@@ -317,7 +317,7 @@ final class PersonControllerUpdateTest extends WebTestCase
      */
     protected function refreshPerson()
     {
-        $this->person = $this->em->getRepository('ChillPersonBundle:Person')
+        $this->person = $this->em->getRepository(\Chill\PersonBundle\Entity\Person::class)
             ->find($this->person->getId());
     }