travis: Attempt switch to containerized infrastructure.
travis: Attempt switch to containerized infrastructure.

chuckatkins/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,sdalton1/legion,noahdesu/legion,chuckatkins/legion,noahdesu/legion,chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,noahdesu/legion,chuckatkins/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion,chuckatkins/legion,sdalton1/legion,StanfordLegion/legion,sdalton1/legion,noahdesu/legion,StanfordLegion/legion,noahdesu/legion,StanfordLegion/legion