try fix from travis-ci/travis-ci#3259 for latest jdk

Todd Berman · Todd Berman · commit 8f12a519ff67 · 2015-11-08T22:20:15.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,3 +1,8 @@
 language: java
 jdk:
-  - oraclejdk8
+  - oraclejdk8
+sudo: false
+addons:
+  apt:
+    packages:
+      - oracle-java8-installer
