stats.wikimedia.org - enable SSL, replace webserver::apache::site
and its inline Apache config with apache_site and template in ./sites/apache

To: - make it more uniform to the setup of most other misc apache
sites, especially metrics.wm on the same host, instead of being a one-off
    - make it easier to read Apache config in one place
    - and enable HTTPS for RT #4749 without running into conflicts
      between the different site setups on one host
    - don't have to edit puppet class to change inline Apache config

RT #4749

Change-Id: I241e1964e127633084644de601bdb30fffd30a63
Merge "stats.wikimedia.org - enable SSL, replace webserver::apache::site and its inline Apache config with apache_site and template in ./sites/apache" into production