Deprecate test flags connected to deprecated gingko flags/options

[tnozicka]

The --progress, --slow-spec-threshold, --always-emit-ginkgo-writer flags and the SuppressProgressReporting decorator have all been deprecated. Instead the existing -v and -vv flags better capture the level of verbosity to display. However, a new --show-node-events flag is added to include node > Enter and < Exit events in the spec timeline.

https://github.com/onsi/ginkgo/blob/5c32b2a6408b866b04774abad81eca2274f4fb5b/CHANGELOG.md#250

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/lifecycle stale

[tnozicka]

/remove-lifecycle stale /triage accepted