Suppress incorrect start-up log message related to requested URI discovery

[tjquinno]

Resolves #5859

Users can configure requested URI discovery explicitly as enabled=false with the discovery type of HOST. That's legitimate and is the normal case.

In fact, the code creates these settings internally if the user has not set up discovery settings explicitly.

Further, in the case of the default socket, the socket init code invokes SocketConfiguration#prepareAndCheckRequestedUriSettings twice, and the second time through the code was incorrectly logging the message (because it had itself previously established these settings).

In these cases, the code should not log the INFO message about ignoring explicit discovery type or trusted proxy settings when the feature is disabled.