Add Ansible configuration and playbook for user creation; update Vagrantfile for playbook path

Vagrantfile

@@ -13,7 +13,7 @@ Vagrant.configure("2") do |config|
     end
 
     kube01.vm.provision "ansible" do |ansible|
-      ansible.playbook = "vytvor_uzivatele.yml"
+      ansible.playbook = "ansible/vytvor_uzivatele.yml"
       ansible.verbose = true
     end
   end