[Misc] Add SPDX-FileCopyrightText (#19100)

Signed-off-by: simon-mo <simon.mo@hey.com>

tests/plugins/vllm_add_dummy_platform/vllm_add_dummy_platform/dummy_platform.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from vllm.platforms.cuda import CudaPlatform
 

tests/plugins_tests/conftest.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import pytest
 
 

tests/plugins_tests/test_platform_plugins.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import pytest
 import torch

tests/plugins_tests/test_scheduler_plugins.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import pytest
 

tests/prefix_caching/test_disable_sliding_window.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Compare the with and without prefix caching.
 
 Run `pytest tests/prefix_caching/test_prefix_caching.py`.

tests/prefix_caching/test_prefix_caching.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Compare the with and without prefix caching.
 
 Run `pytest tests/prefix_caching/test_prefix_caching.py`.

tests/prompt_adapter/test_bloom.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import pytest
 

tests/prompt_adapter/test_multi_adapter_inference.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from vllm import EngineArgs, LLMEngine, SamplingParams
 from vllm.prompt_adapter.request import PromptAdapterRequest

tests/prompt_adapter/test_pa_lora.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from huggingface_hub import snapshot_download
 

tests/quantization/test_auto_round.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Test model set-up and inference for quantized HF models supported
  on the AutoRound.
 

tests/quantization/test_bitsandbytes.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 '''Tests whether bitsandbytes computation is enabled correctly.
 
 Run `pytest tests/quantization/test_bitsandbytes.py`.

tests/quantization/test_compressed_tensors.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Test model set-up and weight loading for llmcompressor-quantized models.
 
 Run `pytest tests/quantization/test_compressed_tensors.py`.

tests/quantization/test_configs.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests whether Marlin models can be loaded from the autogptq config.
 
 Run `pytest tests/quantization/test_configs.py --forked`.

tests/quantization/test_cpu_offload.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 # Expanded quantized model tests for CPU offloading
 # Base tests: tests/basic_correctness/test_cpu_offload.py

tests/quantization/test_experts_int8.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 # flake8: noqa
 """Tests experts_int8 quantization startup and generation, 

tests/quantization/test_fp8.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests whether FP8 computation is enabled correctly.
 
 Run `pytest tests/quantization/test_fp8.py --forked`.

tests/quantization/test_gptq_dynamic.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests whether gptq models with dynamic quantized can be loaded.
 
 Run `pytest tests/quantization/test_gptq_dynamic.py --forked`.

tests/quantization/test_ipex_quant.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Test model set-up and inference for quantized HF models supported
  on the CPU/GPU backend using IPEX (including AWQ/GPTQ).
  

tests/quantization/test_lm_head.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests whether gptq models with quantized lm_head can be loaded.
 
 Run `pytest tests/quantization/test_quant_lm_head_true.py --forked`.

tests/quantization/test_ptpc_fp8.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests whether PTPC w8a8 FP8 computation is enabled correctly.
 
 Run `pytest tests/quantization/test_ptpc_fp8.py --forked`.