puppet-horizon will not apply apache redirects correctly with next released version of apache module

[Colleen Murphy]

The puppet-horizon module depends on puppetlabs-apache <2.0.0. The soon-to-be-released version of puppetlabs-apache will contain a bugfix that breaks the apache redirect functionality in the horizon vhost.

The pull request that changed the behavior is https://github.com/puppetlabs/puppetlabs-apache/pull/881

The horizon module had reverse-engineered the apache module to work around the bug and came up with https://github.com/stackforge/puppet-horizon/blob/master/manifests/wsgi/apache.pp#L174

The next time the apache module is released, the work-around will break.

A stopgap measure would be to pin the apache version in horizon's modulefile/metadata.json. A better solution is to rewrite that ensure_resources call to properly supply the redirect destination.