### What this PR does / why we need it?
The functions KVTransferConfig.from_cli and AscendHcclConnector are
missing in the latest vLLM version. To resolve this, I propose modifying
the kv_connector to use LLMDataDistCMgrConnector, which depends on [PR
#2079](https://github.com/vllm-project/vllm-ascend/pull/2079)
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
vllm:main
vllm-ascend:mian
results:
```bash
Adding requests: 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 4/4 [00:00<00:00, 374.27it/s]
Processed prompts: 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████| 4/4 [00:00<00:00, 66.06it/s, est. speed input: 449.08 toks/s, output: 66.51 toks/s]
Prefill node is finished.
INFO 07-31 09:18:30 [model_runner_v1.py:2282] Graph capturing finished in 36 secs, took 0.21 GiB
INFO 07-31 09:18:30 [core.py:201] init engine (profile, create kv cache, warmup model) took 52.49 seconds
INFO 07-31 09:18:30 [factory.py:74] Creating v1 connector with name: LLMDataDistCMgrConnector and engine_id: 28c8ced8-575c-4f87-840a-48d04d0edf7e
INFO 07-31 09:18:30 [platform.py:157] PIECEWISE compilation enabled on NPU. use_inductor not supported - using only ACL Graph mode
INFO 07-31 09:18:30 [utils.py:333] Calculated maximum supported batch sizes for ACL graph: 76
INFO 07-31 09:18:30 [utils.py:359] No adjustment needed for ACL graph batch sizes: Qwen2ForCausalLM model (layers: 24) with 67 sizes
INFO 07-31 09:18:30 [llm.py:293] Supported_tasks: ['generate']
Waiting for prefill node to finish...
Adding requests: 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 4/4 [00:00<00:00, 709.70it/s]
Processed prompts: 100%|██████████████████████████████████████████████████████████████████████████████████████████████████████| 4/4 [00:00<00:00, 16.23it/s, est. speed input: 109.70 toks/s, output: 260.01 toks/s]
Prompt: 'Hello, how are you today?', Generated text: " I'm a computer program, so I don't have feelings. But I can"
Prompt: 'Hi, what is your name?', Generated text: ' I am a computer programmer. I have a question about the programming language I am'
Prompt: 'Tell me a very long story.', Generated text: ' I want to read it. I want to read it. I want to read'
Prompt: 'what is your favourite book?', Generated text: " I'm sorry, but as an AI language model, I don't have personal"
Cleanup prefill resources
All process done
```
- vLLM version: v0.10.0
- vLLM main:
9cb497bfa3
Signed-off-by: yangqinghao-cmss <yangqinghao_yewu@cmss.chinamobile.com>
99fa0ac882