add option to enable TLS via environment variable

output/elasticsearch/fluent-bit-configmap.yaml

@@ -43,6 +43,7 @@ data:
         Match           *
         Host            ${FLUENT_ELASTICSEARCH_HOST}
         Port            ${FLUENT_ELASTICSEARCH_PORT}
+        tls             ${FLUENT_ELASTICSEARCH_TLS}
         Logstash_Format On
         Retry_Limit     False
 

output/elasticsearch/fluent-bit-ds-minikube.yaml

@@ -23,6 +23,8 @@ spec:
           value: "elasticsearch"
         - name: FLUENT_ELASTICSEARCH_PORT
           value: "9200"
+        - name:  FLUENT_ELASTICSEARCH_TLS
+          value: "Off"
         volumeMounts:
         - name: varlog
           mountPath: /var/log