Removed 'mariadb_version' variable that doesn't exist anymore
Merge pull request #301 from Ilyes512/fix-mariadb

Removed 'mariadb_version' variable that doesn't exist anymore
forcing yes on apache install, adding apt-key updates for php/apache
updated FPM to only listen to localhost (127.0.0.1) clients - in this case, nginx
DRYing up github urls in the vagrantfile