753864 pagure: Add empty IP address to the permitted IP filter

Authored and Committed by Pharaoh_Atem 3 years ago
    pagure: Add empty IP address to the permitted IP filter
    
    There seems to be an issue where the IP address reported by the
    AuthorizedKeysCommand is an empty string (presumably because of
    gunicorn operating on a socket instead of an IP), so let's ensure
    that works.