feat: generate veritasaccess charm

[ahmad-can]

Related Charm https://review.opendev.org/c/openstack/sunbeam-charms/+/984537

[Copilot]

Pull request overview

Adds initial support (backend implementation + unit tests) for the Veritas Access Cinder volume charm/backend.

Changes:

• Introduces a new veritasaccess storage backend and its Pydantic config model.
• Adds a dedicated unit test module for the new backend/config validation.
• Extends shared backend test fixtures and “all backends” assertions to include veritasaccess.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
sunbeam-python/sunbeam/storage/backends/veritasaccess/backend.py	New Veritas Access backend implementation and config schema.
sunbeam-python/sunbeam/storage/backends/veritasaccess/init.py	New backend package initializer/docstring.
sunbeam-python/tests/unit/sunbeam/storage/backends/test_veritasaccess.py	New unit tests for backend identity and protocol validation.
sunbeam-python/tests/unit/sunbeam/storage/backends/test_common.py	Includes veritasaccess in shared uniqueness/expectation tests.
sunbeam-python/tests/unit/sunbeam/storage/backends/conftest.py	Adds veritasaccess_backend fixture and includes it in parametrized backend fixture.

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