Automatic merge from submit-queue (batch tested with PRs 46648, 46500, 46238, 46668, 46557)

Fix standardFinalizers - add missing metav1.FinalizerDeleteDependents

**What this PR does / why we need it**:
It adds [FinalizerDeleteDependents](https://github.com/kubernetes/kubernetes/blob/58167fcfa10551cc092ee7484e8b41082d0ac223/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go#L77) to [standardFinalizers](https://github.com/kubernetes/kubernetes/blob/58167fcfa10551cc092ee7484e8b41082d0ac223/pkg/api/helper/helpers.go#L222) otherwise this finalizer is unusable because apiserver will fail validation because it is not fully qualified name - but it is a standard Kubernetes finalizer [used by garbage collector](https://github.com/kubernetes/kubernetes/blob/58167fcfa10551cc092ee7484e8b41082d0ac223/pkg/controller/garbagecollector/garbagecollector.go#L389) but it can't be set.

It's sibling [FinalizerOrphanDependents](https://github.com/kubernetes/kubernetes/blob/58167fcfa10551cc092ee7484e8b41082d0ac223/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go#L76) is already [there](https://github.com/kubernetes/kubernetes/blob/58167fcfa10551cc092ee7484e8b41082d0ac223/pkg/api/helper/helpers.go#L224). I suppose this is a bug because otherwise `FinalizerDeleteDependents` is unusable.

Fixes https://github.com/openshift/origin/pull/14322
Might fix https://github.com/kubernetes/kubernetes/pull/45764

**Not for the reviewer:**
[This same definition is also in staging.](https://github.com/kubernetes/kubernetes/blob/58167fcfa10551cc092ee7484e8b41082d0ac223/staging/src/k8s.io/client-go/pkg/api/helper/helpers.go#L222) Does it get propagated to staging automatically? Editing the same file twice doesn't seem like the intended option.