Use fork of puppetlabs-apache for Fedora 19 support

Use my fork of puppetlabs-apache until they support Apache 2.4 and Fedora.  These are the minimum changes for foreman-installer to function correctly on F19:

* Use " Mutex sysvsem " instead of SSLMutex
   -  Issue: puppetlabs/puppetlabs-apache#564
* Don't enable authn_alias, authn_default, authz_default
  - Issue: puppetlabs/puppetlabs-apache#423
* Include Fedora's Include conf.modules.d/*.conf for proper MPM setup
  - Issue: puppetlabs/puppetlabs-apache#467