RT: install different Apache config on new server
If we are on the new server on jessie, we are also going
to be behind misc-web. That means we are a backend and
only speak http and redirecting the same way as before
causes broken redirects. So remove all the *:443 and SSL part
in that case but leave existing setup unchanged.
Since we know it's already Apache 2.4 also removing the snippets
that added compat for Apache 2.2.