Test on the latest chef with chef-zero
Test on the latest chef with chef-zero

Solo is EOL at this point. Zero gives a more server like experience
Test against the latest chef release as well. 12.13 has a huge number of improvements over 12.8

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

svanzoest-cookbooks/apache2,svanzoest-cookbooks/apache2,svanzoest-cookbooks/apache2