Plugin doesn't work correctly with self-signed SSL certs even with ca_cert specified

[Anarhyst266]

My filter configuration is:

       opensearch {
          index => "index"
          query_template => "/etc/logstash/templates/6hr-1200km-template.json"
          hosts       => ["opensearch-cluster-master.elastic-stack-logging.svc.cluster.local:9200"]
          user        => "logstash"
          password    => "logstash"
          ssl         => true
          ca_file     => "/usr/share/logstash/certs/ca.crt"
          add_field => {"found_distance_alert" => "YES"}
          fields => {
            "subject" => "found_subject"
            "ip" => "found_ip"
            "[geoip][country_name]" => "found_country"
            "[geoip][city_name]" => "found_city_name"
            "[geoip][latitude]" => "[found_geoip][latitude]"
            "[geoip][longitude]" => "[found_geoip][longitude]"
            "[geoip][location]" => "[found_geoip][location]"
          }
        }
        

and plugin can't communicate with OpenSearch normally.

I've fixed that in https://github.com/Anarhyst266/logstash-filter-opensearch-manticore (had to create new repo with another name, because need to install it from rubygems).
Feel free to port changes back here