Skip already uploaded artifacts with gsutil
Skip already uploaded artifacts with gsutil

It might be possible that we re-run the CI and the artifact already
exists. In that case we will not fail the `results` step.

Signed-off-by: Sascha Grunert <70ab469ddb2ac3e35f32ed7c2fd1cca514b2e879@suse.com>

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