pkg/cfg: print help only when requested, and print it on stdout #1396
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When invalid parameter or value is provided, error is printed to stderr, together with message indicating how to get list of all parameters. Signed-off-by: Peter Štibraný <peter.stibrany@grafana.com>
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What this PR does / why we need it:
-h/-help now prints available parameters and their descriptions to stdout. This makes it easier to grep/less them without extra stderr->stdout redirects.
When invalid parameter or value is provided, error is printed to stderr, together with message indicating how to get list of all parameters. For example:
or
Which issue(s) this PR fixes:
Fixes #1193