(#22662) create a logstash_event logger

This pull request implements logdest for puppet runs as using
a structured log format for logstash (json, eventlog, schema can be
found at https://logstash.jira.com/browse/LOGSTASH-675 ).
Merge pull request #1936 from rarruda/logstash_event_log

(#22662) create a logstash_event logger
Merge branch 'master' of https://github.com/puppetlabs/puppet