Adjust .travis.yml to reflect the fact that Ubuntu 12.04 (used by Travis-CI worker nodes) does not have the slurm-drmaa stuff in universe.
Adjust .travis.yml to reflect the fact that Ubuntu 12.04 (used by Travis-CI worker nodes) does not have the slurm-drmaa stuff in universe.

natefoo/pulsar,natefoo/pulsar,jmchilton/pulsar,jmchilton/lwr,ssorgatem/pulsar,jmchilton/pulsar,galaxyproject/pulsar,jmchilton/lwr,galaxyproject/pulsar,ssorgatem/pulsar