Remove 'reload-apache2' exec; set backup => false

* Set backup => false by default for file resources. Puppet's file bucketing
  functionality is not very usable, and not likely to be very useful in the
  case of a VM that is cheap to teardown and reprovision.
* Remove 'reload-apache2' hack. Specifying 'init' as the provider for the
  apache2 service makes the service resource behave properly, making
  reload-apache2 unnecessary.
* Tweak the formatting of class parameters so that each parameter is on its own
  line.

Change-Id: Ie447ab220c8f5fa49220edff14ff8de6daa56f8a