[CI] Add new runner and enable QwQ multinpu test (#417)

### What this PR does / why we need it?

- Add a new runner to the continuous integration system and keep the
original CI runner until the new runner runs stably
- Add distributed test cases

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
CI passed

---------

Signed-off-by: wangli <wangli858794774@gmail.com>

pytest.ini

@@ -1,5 +1,8 @@
 [pytest]
 minversion = 6.0
+markers =
+    singlenpu: tests that run on single npu
+    multinpu: tests that run on multi npu
 norecursedirs = 
     vllm-empty/tests/prefix_caching
     vllm-empty/tests/weight_loading