Combining all prepare/unprepare operations for a pod enables plugins to
optimize the execution. Plugins can continue to use the v1beta2 API for now,
but should switch. The new API is designed so that plugins which want to work
on each claim one-by-one can do so and then report errors for each claim
separately, i.e. partial success is supported.
Added NodeAlphaFeature:DynamicResourceAllocation to the Node DRA test
to fix failing containerd serial jobs. Those jobs skip tests labeled
with NodeAlphaFeature.
Removed NodeFeature:DynamicResourceAllocation label from the
tests to fix cos-cgroupv1/v2-containerd-node-e2e-serial CI jobs.
It turned out that labeling DRA Node tests as NodeFeature was
a mistake. Re-labeling with NodeAlphaFeature would not work either.
It would fail certain containerd jobs as DRA requires containerd >= 1.7
