travis: run old php version on trusty dist

adaamz · web-flow · commit f76b1472d334 · 2019-12-07T20:18:50.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,7 +2,9 @@ language: php
 
 php:
   - "5.4"
+    dist: trusty
   - "5.5"
+    dist: trusty
   - "5.6"
   - "7.0"
   - "7.1"
