Automatically install Ansible requirements when executing Vagrant

Vagrantfile

# Put this before Vagrant.configure and you're good to go

def install_ansible_requirements
    dir = File.dirname(File.expand_path(__FILE__))
    if (File.exist?("#{dir}/ansible/requirements.yml"))
        system "ansible-galaxy install -r #{dir}/ansible/requirements.yml"
    end
end

install_ansible_requirements