[prometheus-snmp-exporter] Allow setting environment variables via envFrom #4441
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@Miouge1 @xiu @walker-tom
What this PR does / why we need it
Allow setting an optional
envFrom
section in DaemonSet or Deployment in order to be able to inject secrets as environment variables to be expanded by the exporter.Which issue this PR fixes
Checklist
[prometheus-couchdb-exporter]
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