travis: Test 8.5.0 instead of 7.9.0
travis: Test 8.5.0 instead of 7.9.0

NetSys/quilt,kklin/quilt,LuiseV/quilt,LuiseV/quilt,kelda/kelda,kklin/kelda,quilt/quilt,NetSys/quilt,ejj/quilt-dev,ejj/quilt-dev,quilt/quilt,quilt/quilt,kklin/kelda,ejj/quilt-dev,LuiseV/quilt,quilt/quilt,kklin/kelda,NetSys/quilt,kklin/quilt,NetSys/quilt,kelda/kelda,kklin/kelda,kelda/kelda,kklin/quilt,LuiseV/quilt,kklin/quilt,NetSys/quilt,kelda/kelda,LuiseV/quilt,ejj/quilt-dev