Refactor ci to reuse base workflow and re-enable ut coverage (#3064)

### What this PR does / why we need it?
1. Refactor ci to reuse base workflow and enable main 2 hours trigger
job:
- Extract e2e test in to _e2e_test.yaml
- Reuse _e2e_test in light / full job
- Enable main 2 hours trigger job

2. Rename e2e test to ascend test to make sure action display label 
3. Re-enable ut coverage which was failed since
5bcb4c1528
and disable on
6d8bc38c7b

### Does this PR introduce _any_ user-facing change?
Only developer behavior changes:
- Every job trigger full test with vllm release and hash
- Run full job per 2 hours with vllm main
- e2e light test (30 mins): `lint` (6mins) ---> ut (10mins) --->
`v0.10.2 + main / 4 jobs` (15mins)
- e2e full test (1.5h): `ready label` ---> `v0.10.2 + main / 4 jobs`,
about 1.5h
- schedule test: 2hours ---> `v0.10.2 + main / 4 jobs`, about 1.5h 

### How was this patch tested?
CI passed


- vLLM version: v0.10.2
- vLLM main:
c60e6137f0

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

.github/workflows/vllm_ascend_test_full_vllm_main.yaml

@@ -0,0 +1,45 @@
+#
+# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# This file is a part of the vllm-ascend project.
+#
+name: 'ascend test / vllm main'
+
+on:
+  # Run 1-card and 2-cards e2e tests per 2h
+  schedule:
+    - cron: '0 */2 * * *'
+  workflow_dispatch:
+
+# Bash shells do not use ~/.profile or ~/.bashrc so these shells need to be explicitly
+# declared as "shell: bash -el {0}" on steps that need to be properly activated.
+# It's used to activate ascend-toolkit environment variables.
+defaults:
+  run:
+    shell: bash -el {0}
+
+# only cancel in-progress runs of the same workflow
+# and ignore the lint / 1 card / 4 cards test type
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  e2e-test:
+    uses: ./.github/workflows/_e2e_test.yaml
+    with:
+      vllm: main
+      runner: linux-aarch64-a2
+      image: swr.cn-southwest-2.myhuaweicloud.com/base_image/ascend-ci/cann:8.2.rc1-910b-ubuntu22.04-py3.11
+      type: full