ci(e2e): add DVP-over-DVP matrix testing with parallel execution

[yachmenevas]

Description

Implement isolated DVP-over-DVP testing with parallel matrix execution for storage profiles (sds, cephrbd). Includes modular workflow architecture, CLI wrapper, and automatic cleanup for nightly runs.

Why do we need it, and what problem does it solve?

What is the expected result?

Checklist

• [ ] The code is covered by unit tests.
• [ ] e2e tests passed.
• [ ] Documentation updated according to the changes.
• [ ] Changes were tested in the Kubernetes cluster manually.

Changelog entries

section: ci
type: chore
summary: add DVP-over-DVP matrix e2e testing