Enable sudo:required

Nyholm · Nyholm · commit 020e6739f973 · 2017-07-08T01:25:52.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: php
 
-sudo: false
+sudo: required
 
 cache:
     directories:
