[CI] Enable auto upgrade e2e estimated time for auto-partition suites (#6840)

### What this PR does / why we need it?
This patch add a schedule triggered workflow for auto upgrade e2e
estimated-time for batter load balance
1. The workflow will run the full e2e test to get the duration of each
test.
2. The script `update_estimated_time.py` will upgrade the
[config.json](https://github.com/vllm-project/vllm-ascend/blob/main/.github/workflows/scripts/config.yaml)
according to the latest time
3. The workflow will submit a pull request that includes changes to
`config.json` automatically
<img width="2484" height="764" alt="image"
src="https://github.com/user-attachments/assets/02f3459c-bb3b-4f8e-9966-8bb2e5c1bbea"
/>


### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.15.0
- vLLM main:
83b47f67b1
- 
### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.15.0
- vLLM main:
83b47f67b1

---------

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

.github/workflows/scripts/update_estimated_time.py

@@ -0,0 +1,102 @@
+#!/usr/bin/env python3
+"""
+Update estimated_time in config.yaml from CI timing data.
+
+Usage:
+    python3 update_estimated_time.py \
+        --timing-dir ./timing-artifacts \
+        --config .github/workflows/scripts/config.yaml
+"""
+
+import argparse
+import json
+from pathlib import Path
+
+import yaml
+
+
+def collect_timings(timing_dir: Path) -> dict[str, int]:
+    """
+    Recursively scan timing_dir for JSON files produced by run_suite.py.
+    Returns {test_name: elapsed_seconds} for all passed tests.
+    Warns if the same test name appears in multiple files.
+    """
+    json_files = list(timing_dir.rglob("*.json"))
+    print(f"Found {len(json_files)} timing file(s) in {timing_dir}")
+
+    timings: dict[str, int] = {}
+    for path in json_files:
+        try:
+            data = json.loads(path.read_text())
+        except (json.JSONDecodeError, OSError) as e:
+            print(f"  Warning: skipping {path}: {e}")
+            continue
+
+        for test in data.get("tests", []):
+            if not test.get("passed", False):
+                continue
+            name: str = test.get("name", "")
+            elapsed: float = test.get("elapsed", 0.0)
+            if not name or elapsed <= 0:
+                continue
+            if name in timings:
+                print(f"  Warning: duplicate entry for '{name}', overwriting {timings[name]}s with {int(elapsed)}s")
+            timings[name] = int(elapsed)
+
+    return timings
+
+
+def update_config(config_path: Path, timings: dict[str, int]) -> int:
+    """
+    Load config.yaml, update estimated_time for each test found in timings,
+    and write the result back. Returns the number of changed entries.
+    """
+    configs: dict = yaml.safe_load(config_path.read_text())
+
+    changed = 0
+    for suite_tests in configs.values():
+        for test in suite_tests:
+            name: str = test.get("name", "")
+            if name not in timings:
+                continue
+            old_time: int = test.get("estimated_time", 0)
+            new_time: int = timings[name]
+            if old_time == new_time:
+                continue
+            test["estimated_time"] = new_time
+            print(f"  {name}: {old_time}s -> {new_time}s")
+            changed += 1
+
+    config_path.write_text(yaml.dump(configs, default_flow_style=False, allow_unicode=True, sort_keys=False))
+    return changed
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Update estimated_time in config.yaml from CI timing data")
+    parser.add_argument(
+        "--timing-dir",
+        required=True,
+        type=Path,
+        help="Directory containing timing JSON files (searched recursively)",
+    )
+    parser.add_argument(
+        "--config",
+        default=".github/workflows/scripts/config.yaml",
+        type=Path,
+        help="Path to config.yaml (default: .github/workflows/scripts/config.yaml)",
+    )
+    args = parser.parse_args()
+
+    timings = collect_timings(args.timing_dir)
+    if not timings:
+        print("No timing data collected. Exiting without changes.")
+        return
+
+    print(f"\nCollected timing data for {len(timings)} test(s).")
+    print(f"Updating {args.config}...")
+    changed = update_config(args.config, timings)
+    print(f"\nDone. {changed} estimated_time value(s) changed.")
+
+
+if __name__ == "__main__":
+    main()