Don't use NFS anymore.

Vagrantfile

@@ -32,7 +32,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   # the path on the guest to mount the folder. And the optional third
   # argument is a set of non-required options.
   config.vm.synced_folder '.', '/vagrant', disabled: true
-  config.vm.synced_folder "bikeshop_project", "/srv/bikeshop", type: "nfs"
+  config.vm.synced_folder "bikeshop_project", "/srv/bikeshop"
 
   config.vm.provision "ansible" do |ansible|
       ansible.groups = {