Extra commits

ansible_install.sh

@@ -2,4 +2,4 @@
 [ `id -u` -ne 0  ] && exit 1
 echo "deb http://ppa.launchpad.net/ansible/ansible/ubuntu trusty main" >> /etc/apt/sources.list
 apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 93C4A3FD7BB9C367
-apt update && apt install ansible
+apt update && apt install -y ansible

ansible_provisioning.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 [ `id -u` -ne 0 ] && exit 1
-ssh-keygen -t rsa -b 4096 -N '' -f ~/.ssh/id_rsa
+test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096 -N '' -f ~/.ssh/id_rsa
 ansible-playbook -i inventory/hosts --skip-tags swarm --diff -v galera.yml