test/devices.bats: skip earlier
test/devices.bats: skip earlier

This saves some time (a few seconds per test at least) as we avoid
running setup_test (and cleanup_test has nothing to clean up), and
removes some code duplication.

Signed-off-by: Kir Kolyshkin <3a017b8ddb3f9cf3e4a59978b004111bdeb97f08@gmail.com>

nalind/cri-o,kubernetes-incubator/cri-o,kubernetes-incubator/cri-o,kubernetes-incubator/ocid,nalind/cri-o,nalind/cri-o,kubernetes-incubator/ocid,kubernetes-incubator/ocid,kubernetes-incubator/cri-o,kubernetes-incubator/cri-o