chore: minor jellyfin updates (#300)

- add jellyfin to video group, for access to gpu
- install intel related gpu drivers
- export lxc jellyfin to haproxy

Reviewed-on: https://git.query.consul/unkinben/puppet-prod/pulls/300

site/profiles/templates/jellyfin/override.conf.erb

@@ -4,5 +4,5 @@
 
 [Service]
 #User = jellyfin
-EnvironmentFile = <%= @environment_file %>
+EnvironmentFile = <%= @sysconfig_file %>
 WorkingDirectory = <%= @lib_dir %>