[CI] Update Travis config for Trusty.
[CI] Update Travis config for Trusty.

davetcoleman/moveit,davetcoleman/moveit,davetcoleman/moveit,ros-planning/moveit,v4hn/moveit,ros-planning/moveit,davetcoleman/moveit,v4hn/moveit,ros-planning/moveit,ros-planning/moveit,ros-planning/moveit,v4hn/moveit,v4hn/moveit