update travis build for multiple JDK versions (8,9,10,11)

Twitter4J is an open-sourced, mavenized and Google App Engine safe Java library for the Twitter API which is released under the Apache License 2.0.

Brought to you by: hationlove

Status: open

Owner: nobody

Labels: None

Updated: 2018-10-16

Created: 2018-10-16

Creator: Anonymous

Private: No

Originally created by: SingingBush

Travis support multiple JDK's up to 11. This PR is simply to update the trivus build to use the various supported JDK versions.