fix typo in the tests
fix typo in the tests

This typo is present since ~ 7 months. https://github.com/puppetlabs/puppetlabs-apache/commit/02919a8295b31931efda728654ab1d69ac4771e7#diff-54659813dfca25ca1f5df88aaccb09ecL199
Nobody noticed it because there are no acceptance tests running for
everything where unless does not match. I discovered this in https://github.com/puppetlabs/puppetlabs-apache/pull/1809

puppetlabs/puppetlabs-apache,puppetlabs/puppetlabs-apache,yakatz/puppetlabs-apache,traylenator/puppetlabs-apache,yakatz/puppetlabs-apache,traylenator/puppetlabs-apache