add option to enable TLS via environment variable

Author: victoru

docker-image/fluent-bit.conf

@@ -23,5 +23,6 @@
     Match  *
     Host   ${FLUENT_ELASTICSEARCH_HOST}
     Port   ${FLUENT_ELASTICSEARCH_PORT}
+    tls    ${FLUENT_ELASTICSEARCH_TLS}
     Logstash_Format On
     Retry_Limit False

fluent-bit-daemonset-elasticsearch.yaml

@@ -23,6 +23,8 @@ spec:
             value: "elasticsearch-logging"
           - name:  FLUENT_ELASTICSEARCH_PORT
             value: "9200"
+          - name:  FLUENT_ELASTICSEARCH_TLS
+            value: "Off"
         resources:
           limits:
             memory: 100Mi