fix: grant RBAC for events.k8s.io Events emitted by the events/v1 recorder

[xrl]

On a real cluster every operator-emitted Event is rejected by the API server: Server rejected event (will not retry!) ... User "system:serviceaccount:etcd-operator-system:etcd-operator-controller-manager" cannot create resource "events" in API group "events.k8s.io", so kubectl describe etcdcluster always shows Events: <none>. The recorder wired in SetupWithManager via mgr.GetEventRecorder writes events.k8s.io/v1 Events, but role.yaml only grants events verbs in the core ("") API group — envtest does not enforce RBAC, so tests never catch this. This adds an events.k8s.io events create;patch RBAC marker (the two verbs the client-go tools/events broadcaster uses) and regenerates config/rbac/role.yaml. Verified with go build ./... and go test ./internal/... ./api/....

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PR series — operability fixes & TLS

Small single-purpose PRs from live kind-cluster testing of the operator. Each stands alone unless an After is listed. → = this PR.

	PR	Lands	After
	Reviewable now — small, any order
🟢	#374	Requeue instead of swallowing the client-cert provisioning error	—
🟢→	#391	Grant events.k8s.io RBAC so operator Events are actually recorded	—
🟢	#392	Correlate members[]/leaderID from one health snapshot (consistent leader)	—
🟢	#393	Propagate user-supplied altNames.ipAddresses into certificates	—
🟢	#394	Accept day-suffix validityDuration (365d, 100d12h) as documented	—
🟢	#395	Surface early reconcile errors as a Degraded condition (was empty status)	—
🟢	#379	Configurable reconcile worker pool (--max-concurrent-reconciles)	—
🟢	#369	kind-based stress/scale e2e harness (1/3/7 members, churn, quorum watcher)	—
	TLS stack — in order
🟢	#376	Independent spec.tls.{peer,client} surfaces (breaking alpha API)	—
⚪	#377	TLSReady condition + TLS lifecycle Events	#376
⚪	#378	Multi-member TLS quorum e2e + PeerCANotShared	#377
	Parked as drafts pending #363
⚪	#382	Per-cluster domain metrics on the operator /metrics endpoint	—
⚪	#384	EtcdCluster admission webhooks (consolidating with #328)	#363
⚪	#386	EtcdBackup CR → object storage (S3/GCS)	#363
⚪	#387	Automatic quorum-loss disaster recovery (bootstrap-latch guarded)	#363

🟢 ready · ⚪ draft

[kubernetes-prow]

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[kubernetes-prow]

Hi @xrl. Thanks for your PR.

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