False warnings about service missing

[neilstevenson]

On com.hazelcast:hazelcast:4.0-SNAPSHOT with com.hazelcast:hazelcast-kubernetes:2.0
if a stateful set and a service are created in the same YAML, false warnings appear about the service

12:55:55.603 [main] WARN  com.hazelcast.spi.discovery.integration.DiscoveryService - [10.48.2.5]:5701 [xxx] [4.0-SNAPSHOT] DNS lookup for serviceDns 'yyy-service.default.svc.cluster.local' failed: name not found

This seems to be a race condition, the service is still being created. The 2nd pod finds it.

If we suppress this warning, we hide real problems finding the service name.

Also, if the DNS lookup fails, this should be an error not a warning