fix change ownership bug on NFS-mounted filesystems

Hello there,

We were running into issues with the cookbook some VMs using an NFS-mounted filesystem. The tar commands issued would throw a "Cannot change ownership" bug. This bug is mentioned on http://leopard.in.ua/2013/01/12/chef-solo-getting-started-part-4/ where the --no-same-owner flag is proposed as a solution.

We managed to get everything to work with this solution.

Greetings