Fixing apache installation for Ubuntu Saucy (13.10)

On 13.10, the apache conf.d is no more. I added a conditional for that case. That won't handle future Apaches (14.04+), and I didn't know a better way to handle how to set the variables based on the Ansible distribution. 
Besides, one has to remove the php5-suhosin package from the php list, but that can be handled by the client.

Thanks for the work!