William Dauchy 3679d0c794 MINOR: stats: add helper to get status string
move listen status to a helper, defining both status enum and string
definition.
this will be helpful to be reused in prometheus code. It also removes
this hard-to-read nested ternary.

Signed-off-by: William Dauchy <wdauchy@gmail.com>
2021-02-15 14:13:32 +01:00
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