Miek Gieben 7b8cf9df90 mw/health: call Shutdown on FinalShutdown (#1003) ...

Reloading caddy won't kill the health handler. Only on final shutdown
we stop the handler.

Currently when reloading CoreDNS with -SIGUSR1 the health handler stops
answering - there is a test for this but it doesn't capture whole
process reloading, sadly. This PR keeps the handler alive during reloads
and only stops on process shutdown.

2017-08-29 21:23:13 +02:00

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