🌱 Add ginkgo labels to e2e tests

[cahillsf]

What this PR does / why we need it:
adds ginkgo labels to e2e tests

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #9620

/area e2e-testing

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[Danil-Grigorev]

LGTM seems it already can be switched in Makefile from GINKGO_FOCUS to --label-filter=${GINKGO_LABEL_FILTER} with GINKGO_LABEL_FILTER ?= !skip?

[elmiko]

looks like a nice update

/lgtm

[cahillsf]

LGTM seems it already can be switched in Makefile from GINKGO_FOCUS to --label-filter=${GINKGO_LABEL_FILTER} with GINKGO_LABEL_FILTER ?= !skip?

yeah sure, i think there are a few places where we can start updating things. can do that in this PR or a followup.

we would also need to make the changes in test-infra: https://github.com/kubernetes/test-infra/tree/master/config/jobs/kubernetes-sigs/cluster-api to take full advantage of the new labels

[Danil-Grigorev]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: b4c4d704a6f2f99f551f076e1464e3723f2990fb