Force travis to use the new container-based stack for testing
Force travis to use the new container-based stack for testing

harrystech/seed_migration,geoffharcourt/seed_migration,jmyers0022/seed_migration,mzaccari/seed_migration,geoffharcourt/seed_migration,harrystech/seed_migration,mzaccari/seed_migration,jmyers0022/seed_migration,harrystech/seed_migration,geoffharcourt/seed_migration,jmyers0022/seed_migration,mzaccari/seed_migration