Update bx version in Travis configuration
Update bx version in Travis configuration

We were receiving failures in Travis CI due to an old version of the
Bluemix CLI client being installed. Now that has been fixed.

Signed-off-by: Matt Langbehn <be4a68432fbbc874fc2f26c6bc5da2cd4d88fc13@gmail.com>

loafyloaf/Kubernetes-container-service-GitLab-sample