Catch directories we can not change ownership
Catch directories we can not change ownership

When there is a directory where the owner can not be changed, we
fail and do not proceed to check the remaining directories. This
has been seen where netapp creates a special .snapshot directory
which is protected and visible when useing NFSv3, not visible
when using NFSv4.

This change catches the error and proceeds.

Change-Id: I2e61030c863041cd73cb204e31e423da3c6f6944
Resolves-Bug: 1814260

openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates