Use the new build env on Travis

more ram, dedicated cpu cores, better network, improved vm boot times
Merge 1d0fe513fbe7e5e4ddf1581c352c64ca98b2ccd6 into 0210cc2df63c3e3a3ebfddd8416eff664f0705da
Merge remote-tracking branch 'origin/pull-request/merge/1'

* origin/pull-request/merge/1:
  Use the new build env on Travis

Conflicts:
	.travis.yml