tests, dualstack: don't stop nfs tests cleanup in case of an error
tests, dualstack: don't stop nfs tests cleanup in case of an error

The cleanup of the nfs tests was changed, so in case of an error cleaning
one of the componenets, the others would have the chance to be cleaned.

Signed-off-by: Alona Kaplan <9ea2f88c7fe7e68aa51858b03e0d548211901b83@redhat.com>

davidvossel/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt