as in r1517366, drop the severity in authz_groupfile when a require

didn't match but no real error was encountered. 

This individual 'require group' may not really dictate who gets in. PR55523 



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1654184 13f79535-47bb-0310-9956-ffa450edef68