Register /healthz endpoint when listening on duplex http/grpc port
#2046
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Summary
Registers the
/healthzendpoint when listening on a duplex http/grpc port, just like thehttpport does when running in non-duplex mode.The current helm charts use this endpoint for the liveness and readiness probes, so I'm assuming this should be exposed even when HTTP and gRPC are listening on the same port.
Fixes #2047
Release Note