Fixing some deprecation warnings
    
    /usr/local/bin/owner-sync-pagure:110: DeprecationWarning: This method will be removed in future versions.  Use 'parser.read_file()' instead.
    
    koji 1.22 doesn't support krb_login, it supports gssapi_login
    
    Signed-off-by: Mohan Boddu <mboddu@bhujji.com>