Fix issue with travis setup script
Fix issue with travis setup script

The setup_ruby_env.sh script in the manageiq repo uses incorrect
relative pathing.  For now, just make sure we cd into the directory
before sourcing it in.

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic