Add ansible support (tests, bootstrap);
Add option on test.sh to disable ansible test after rebuild
Add travis build that shows how ansible fails after rebuild (marked allowed failure)
Turn off host_key_checking for ansible;
Put distributions in alphabetical order;
Run as vagrant not tester user;
Use a hostname derived from travis job number so we can have
a. two consecutive tests running at the same time and
b. two tests for the same distribution;