Try out Travis-CI dist:bionic

Author: mikesamuel

.travis.yml

@@ -1,13 +1,14 @@
 language: java
 sudo: false
+dist: bionic
 jdk:
   # It's important to test on all these because of a horrible hack in the POM.
 # - openjdk6  # No longer supported by Travis
   - openjdk7
   - oraclejdk8
   - oraclejdk9
   - openjdk10
-  - oraclejdk11
+  - openjdk11
 
 # Test each version with an appropriate Java version and flags to disable
 # GPG signing so that we don't have to provision Travis with private keys.