[vLLM plugin] Rename all tests to single chip tests

[mmanzoorTT]

Ticket

closes #2192

Problem description

Existing tests assume a single chip, but there’s no clear separation between single-chip and multi-chip tests.

What's changed

• Created a dedicated directory for single-chip tests.
• Updated CI JSON files to reference the new paths for single-chip tests.

Checklist

• Existing tests provide coverage for changes

[AleksKnezevic]

I would rather not have the tests in separate places. There's no need that a test that we have for N150 shouldn't also work on llmbox in data-parallel. Let's keep all the tests in one place and use @pytest.mark.single_device and @pytest.mark.llmbox

[mmanzoorTT]

I would rather not have the tests in separate places. There's no need that a test that we have for N150 shouldn't also work on llmbox in data-parallel. Let's keep all the tests in one place and use @pytest.mark.single_device and @pytest.mark.llmbox

@AleksKnezevic Will data-parallel test for N300 works with @pytest.mark.llmbox?

[AleksKnezevic]

@mmanzoorTT, see pytest.ini there are marks for dual_chip and data_parallel, so we should be able to support it. Here's how I set up the TP tests on llm box: #1745

[github-actions]

	Tests	Passed ✅	Skipped ⚠️	Failed
TT-XLA Tests	179 ran	157 passed	22 skipped	0 failed

Test	Result
No test annotations available

• View TT-XLA Tests