[Alerting] Replaced single invalidateApiKey request with the bulk.#87401

Merged

YulNaumenko merged 4 commits intoelastic:masterfrom YulNaumenko:alerts-bulk-invalidate-api-key

Jan 7, 2021

+69-65

Commits on Jan 5, 2021

Replaced single invalidateApiKey request with the bulk
YulNaumenko
committed

Commits on Jan 6, 2021

fixed failing test
YulNaumenko
committed

Commits on Jan 7, 2021

Extended invalidate method to support multiple invalidation. Updated fleets plugin usage of this API.
YulNaumenko
committed
fixed due to comments
YulNaumenko
committed