reporter: do not list /dev/vfio if its not exist
reporter: do not list /dev/vfio if its not exist

there are cases when the /dev/vfio doesn't exist on
virt-launcher pod fs, which causes some noisy logs in the junit report

therefore we check if the directory exists. In case it won't there won't
be vfio-devices file in the k8s-reporter artifacts.

Signed-off-by: Igor Bezukh <9113621149c2d8e5a2b31fa2465615555ce2087b@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt