vagrant: Ignore failures of "chown -R vagrant:vagrant" command
vagrant: Ignore failures of "chown -R vagrant:vagrant" command

For unknown reason, that command sometimes fails and prints the
following stderr message:

  changing ownership of 'test/k8s1-1.17-ttyS0.sock'
  : Input/output error

That can be ignored.

Signed-off-by: Michal Rostecki <82ebf970c69340aebb770c3853be5fd96a3eb584@opensuse.org>

tgraf/cilium,cilium/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,tklauser/cilium,tgraf/cilium,cilium-team/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,tklauser/cilium,michi-covalent/cilium,cilium-team/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,tklauser/cilium