Merge r1654184 from trunk:

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/branches/2.4.x@1661749 13f79535-47bb-0310-9956-ffa450edef68