vagrant: Set NFS to not use UDP

NFS 4 defaults to not allow UDP due to security concerns

Vagrantfile

@@ -89,11 +89,11 @@ Vagrant.configure('2') do |config|
     fail_with_message "vagrant-bindfs missing, please install the plugin with this command:\nvagrant plugin install vagrant-bindfs"
   else
     trellis_config.wordpress_sites.each_pair do |name, site|
-      config.vm.synced_folder local_site_path(site), nfs_path(name), type: 'nfs'
+      config.vm.synced_folder local_site_path(site), nfs_path(name), type: 'nfs', nfs_udp: false
       config.bindfs.bind_folder nfs_path(name), remote_site_path(name, site), u: 'vagrant', g: 'www-data', o: 'nonempty'
     end
 
-    config.vm.synced_folder ANSIBLE_PATH, '/ansible-nfs', type: 'nfs'
+    config.vm.synced_folder ANSIBLE_PATH, '/ansible-nfs', type: 'nfs', nfs_udp: false
     config.bindfs.bind_folder '/ansible-nfs', ANSIBLE_PATH_ON_VM, o: 'nonempty', p: '0644,a+D'
     config.bindfs.bind_folder bin_path, bin_path, perms: '0755'
   end
@@ -105,6 +105,7 @@ Vagrant.configure('2') do |config|
       mount_options: folder.fetch('mount_options', [])
     }
 
+    options[:nfs_udp] = folder.fetch('nfs_udp', false) if folder.fetch('type', 'nfs') == 'nfs'
     destination_folder = folder.fetch('bindfs', true) ? nfs_path(folder['destination']) : folder['destination']
 
     config.vm.synced_folder folder['local_path'], destination_folder, options