Use Apache instead of nginx to serve our static repo files

This includes support for injecting custom Apache configuration blocks by editing the values file, which should make it possible to add authentication later on.

This simplifies the switchover of deployments that are currently using Apache + mod_auth_oidc to guard their published repositories.

https://phabricator.apertis.org/T10135

Signed-off-by: Ryan Gonzalez ryan.gonzalez@collabora.com