fix travis builds

ajungg · ajungg · commit e98a78ccfbd4 · 2019-06-13T14:31:53.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,6 @@
 language: android
 jdk: oraclejdk8
+dist: trusty
 sudo: false
 android:
   components:
