Based on google analytics from docs pageviews, we are updating the bundled
plugins to remove plugins which doesn't have to be in the default package.
They can still be installed via bin/logstash-plugin
Work done by @guyboertje and @ph
Since JRuby 1.7.25 is now EOL we are migrating Logstash to use JRuby 9k and JDK8 only,
Not much needed updating to make this work, its was mostly a drop in replacement from the previous version.
The major point was the change in the implementation of Time in JRuby, JRuby now use `java.time`
instead of joda time, this allow JRuby to have nanoseconds precision on time object.
