fix: use the dist directive to specify xenial

asfaltboy · asfaltboy · commit c050dfb92c8c · 2019-07-22T14:51:22.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: python
 sudo: True
-os: Xenial 
+dist: xenial
 matrix:
   include:
     - env: TOXENV=py27-django111
