Serverspec fails on CentOS 7 if remove chef version

[linc01n]

I'm guessing it is a systemd problem.

[linc01n]

     1) Service "bitbucket" should be running
        Failure/Error: it { should be_running }
          expected Service "bitbucket" to be running
          /bin/sh -c systemctl\ is-active\ bitbucket
          inactive

[linc01n]

Confirmed it is related to this line

chef-stash/.kitchen.yml

Line 4 in a68c056

require_chef_omnibus: 11.16.2

If we remove version pinning then run kitchen test mysql-centos-71 will throw the above error.