Fix the inventory to account for change in vagrant private ssh keys
[vagrant]
-server1 ansible_ssh_host=192.168.4.10 ansible_ssh_user=vagrant
-server2 ansible_ssh_host=192.168.4.11 ansible_ssh_user=vagrant
-server3 ansible_ssh_host=192.168.4.12 ansible_ssh_user=vagrant
+server1 ansible_ssh_host=192.168.4.10 ansible_ssh_user=vagrant ansible_ssh_private_key_file=.vagrant/machines/ubuntu/virtualbox/private_key
+server2 ansible_ssh_host=192.168.4.11 ansible_ssh_user=vagrant ansible_ssh_private_key_file=.vagrant/machines/centos/virtualbox/private_key
+server3 ansible_ssh_host=192.168.4.12 ansible_ssh_user=vagrant ansible_ssh_private_key_file=.vagrant/machines/precise/virtualbox/private_key
+
[ubuntu]
server1