Use the bento slugs in Kitchen and test on Ubuntu 18.04
Use the bento slugs in Kitchen and test on Ubuntu 18.04

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

jtimberman/smartmontools-cookbook,jtimberman/smartmontools-cookbook,jtimberman/smartmontools-cookbook