Attempt fix for GeoscalingIntegrationTest

- Fails in jenkins but nowhere else (not even on same machine)
- Add more logging to GeoscalingIntegrationTest.StubHostGeoLookup
- Tidy up AbstractGeoDnsServiceImpl.inferHostGeoInfo: use
  Networking.getInetAddressWithFixedName even for hostname, in case
  the hostname is an IP for that entity!
Fix SesnorResourceIntegrationTest