Optimized gitlab ci configuration #4724

Optimized gitlab ci.

How to test without running all pipelines:

1. open CI/CD->Editor->Select js/modular-gitlab-ci-2 branch -> View merged YAML -> Copy content.
2. open another tab and do the same thing for the master branch
3. compare the two YAMLs with an online compare tool
4. make sure no rule has changed (some jobs are renamed which can cause confusion when comparing)