[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/quantization/test_bitsandbytes.py

@@ -172,7 +172,7 @@ def test_4bit_bnb_embedding_model(
 
     # Inflight 4bit quantization
     with vllm_runner(model_name,
-                     task="embed",
+                     runner="pooling",
                      dtype=dtype,
                      gpu_memory_utilization=0.5,
                      quantization="bitsandbytes") as vllm_model: