Add support for Fedora 29
Add support for Fedora 29

Fedora 29 provides postgresql 10.6-1.fc29.

buzzdeee/puppetlabs-postgresql,npwalker/puppetlabs-postgresql,DavidS/puppetlabs-postgresql,infoxchange/puppetlabs-postgresql,DavidS/puppetlabs-postgresql,buzzdeee/puppetlabs-postgresql,buzzdeee/puppetlabs-postgresql,puppetlabs/puppetlabs-postgresql,puppetlabs/puppetlabs-postgresql,puppetlabs/puppetlabs-postgresql,infoxchange/puppetlabs-postgresql,npwalker/puppetlabs-postgresql,npwalker/puppetlabs-postgresql,infoxchange/puppetlabs-postgresql,DavidS/puppetlabs-postgresql