Removing the (f23,)f24 support they are EOL.
The only non-trivial change is the apache-httpd default worker change,
however might not be bad idea to use `event` instead of `worker`
in the future, but for now keep it AS-IS and continue to use `worker`.
Change-Id: I96d414a30b58bc4b43da45066fdf310a6a830079
Closes-Bug: #1740194