What is the correct to set esConfig parameter ?
// helm install elastic/elasticsearch --namespace default  
--set imageTag=7.6.1 --set replicas=1 --set minimumMasterNodes=1 
--set resources.requests.memory=2Gi --set volumeClaimTemplate.storageClassName=fek 
--set volumeClaimTemplate.resources.requests.storage=3Gi --kube-context dev --generate-name 
--set esConfig = elasticsearch.yml: |
xpack.security.enabled: true
discovery.type: single-node