Add volume lifecycle churn scale test

[torredil]

What type of PR is this?

ebs-scale-test enhancement.

What is this PR about? / Why do we need it?

Our existing scale tests all follow a sequential pattern where volumes are created, attached, then torn down. That doesn't capture what happens with workloads like Spark pipelines, where volumes are constantly being created and destroyed in overlapping phases.

This PR adds a new test type that models that pattern. It runs waves of short lived jobs, each with its own PVC. When a wave's jobs complete, their resources are deleted and the next wave is immediately submitted so the driver is handling both teardown and provisioning concurrently, which is the behavior we want to benchmark.

Works with both pre-allocated and karpenter cluster types using the existing scale test framework.

How was this change tested?

export TEST_TYPE="volume-lifecycle-churn"
export REPLICAS=500
export WAVES=3

./scale-test setup
./scale-test run
./scale-test cleanup

make update && make verify && make test

Does this PR introduce a user-facing change?

NONE.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign jsafrane for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[github-actions]

Code Coverage Diff

This PR does not change the code coverage

[ElijahQuinones]

/lgtm