Update metadata to note Debian 8 support
Update metadata to note Debian 8 support

HelenCampbell/puppetlabs-ntp,rdo-puppet-modules/puppetlabs-ntp,rdo-puppet-modules/puppetlabs-ntp,bmjen/puppetlabs-ntp,DavidS/puppetlabs-ntp,fuel-infra/puppetlabs-ntp,puppetlabs/puppetlabs-ntp,HelenCampbell/puppetlabs-ntp