[Deprecation][2/N] Replace --task with --runner and --convert (#21470)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Co-authored-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

tests/models/multimodal/pooling/test_dse_qwen2_vl.py

@@ -92,7 +92,7 @@ def _run_test(
     # if we run HF first, the cuda initialization will be done and it
     # will hurt multiprocessing backend with fork method (the default method).
     with vllm_runner(model,
-                     task="embed",
+                     runner="pooling",
                      dtype=dtype,
                      enforce_eager=True,
                      max_model_len=8192) as vllm_model: