Revert "(SERVER-1972) Support Debian 9 in test setup"
Revert "(SERVER-1972) Support Debian 9 in test setup"

This reverts commit 32e8328a918e5fd2f85be823d377eddd4c66a532.

puppetlabs/puppetserver,puppetlabs/puppetserver,puppetlabs/puppetserver,puppetlabs/puppet-server,puppetlabs/puppet-server,puppetlabs/puppetserver,puppetlabs/puppet-server