Windows: NP AFSGetConnectionInfo AuthId == 0

During the processing of a network provider GetConnectionInfo request
if the provided Authentication Logon Session Id is zero, the redirector
should attempt to obtain the Logon Session Id in kernel.  This was
not performed within AFSGetConnectionInfo().

Change-Id: Ia060abfdebc17e52eefac24ac9dc19a7d6434314
Reviewed-on: http://gerrit.openafs.org/10899
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>