Revert "fixup! apache-frontend: Upgrade apache to 2.4"

This reverts commit b4e440ed

software/apache-frontend/buildout.hash.cfg

@@ -39,7 +39,7 @@ md5sum = 665e83d660c9b779249b2179d7ce4b4e
 
 [template-apache-frontend-configuration]
 filename = templates/apache.conf.in
-md5sum = 65b60116bc25be99a40b8c2ad2d23ae4
+md5sum = dda0a7567d83924658fa515e784ff7ea
 
 [template-custom-slave-list]
 filename = templates/apache-custom-slave-list.cfg.in

software/apache-frontend/templates/apache.conf.in

@@ -56,6 +56,7 @@ LoadModule unixd_module        {{ httpd_home }}/modules/mod_unixd.so
 LoadModule access_compat_module {{ httpd_home }}/modules/mod_access_compat.so
 LoadModule authz_core_module  {{ httpd_home }}/modules/mod_authz_core.so
 LoadModule authz_host_module  {{ httpd_home }}/modules/mod_authz_host.so
+LoadModule authn_core_module  {{ httpd_home }}/modules/mod_authn_core.so
 LoadModule log_config_module  {{ httpd_home }}/modules/mod_log_config.so
 LoadModule deflate_module     {{ httpd_home }}/modules/mod_deflate.so
 LoadModule setenvif_module    {{ httpd_home }}/modules/mod_setenvif.so