Deprecate usage of bare env vars and config sources #5153
Merged
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Deprecate usage of bare environment variables and config sources in configuration files.
${env:VAR}
or${VAR}
instead of$VAR
.${uri:selector}
instead of$uri:selector
, e.g.${file:/path/to/file}
instead of$file:/path/to/file
.Detect such usages and print a deprecation warning. It's ok to not use logger because it's not initiated at this point yet. We use
log.Print
at this stage in other places as well.