[CI] enable custom ops build (#466)

### What this PR does / why we need it?
This PR enable custom ops build  by default. 

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

Yes, users now install vllm-ascend from source will trigger custom ops
build step.

### How was this patch tested?
By image build and e2e CI

---------

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

.github/workflows/actionlint.yml

@@ -46,6 +46,8 @@ jobs:
           fetch-depth: 0
 
       - name: "Run actionlint"
+        env:
+          SHELLCHECK_OPTS: --exclude=SC2046,SC2006
         run: |
           echo "::add-matcher::.github/workflows/matchers/actionlint.json"
           tools/actionlint.sh -color