(MODULES-10887) Set `use_servername_for_filenames` for defaults
(MODULES-10887) Set `use_servername_for_filenames` for defaults

The default vhost definitions are called without
`use_servername_for_filenames` being set, which leads to a deprecation
warning on every run.

With this PR, the parameters are added to the default entries and thus
avoid generating said error message.

This was verified on a local installation.

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