245.4

What's Changed

• logstash configuration cleanup by @magenx in #121
• add elk role index domain name and log by @magenx in #122
• fix elasticsearch users by @magenx in #124
• fix elk users loop by @magenx in #125
• replace logstash with filebeat by @magenx in #126
• filebeat config cleanup by @magenx in #127
• optimize varnish cache for media by @magenx in #128

Full Changelog: 245.3...245.4