Update stat1001's httpd access directive to only use Require instead of old Order/Allow/Deny.
The basic Debian httpd config uses Require for / and all the stats websites
uses Order/Allow/Deny. There directives belongs to separate modules: mod_access_compact
and mod_authz_hosts, the latter being the suggested for 2.4. Mixing directives can
lead to access denied issues, so since we are not going back to 2.2 ever it does make
sense to use only new directives.
More info: https://httpd.apache.org/docs/current/upgrading.html#run-time