Draft: Download assets from generic package for JH

What does this MR do and why?

Recently, an upstream MR ci: Download assets from generic package added three pipeline jobs:

1. cache-assets:test
2. cache-assets:test as-if-foss
3. cache-assets:production

Before rules:

• never run unless $CACHE_ASSETS_AS_PACKAGE == "true"
• runs automatically for all GitLab.com gitlab-org/gitlab scheduled pipelines
• runs automatically for GitLab.com's default branch commit that touches the assets-related folders
• is manual for GitLab.com's gitlab-org's MRs that touches caching-related files

These rules make cache-assets only take effect under the gitlab.com domain.

For JH, we need to rewrite the cache-assets rules to accommodate jihulab.com.

After rules:

• never run unless $CACHE_ASSETS_AS_PACKAGE == "true"
• runs automatically for all jihulab.com gitlab-cn/gitlab scheduled pipelines
• runs automatically for jihulab.com's default branch commit that touches the assets-related folders
• is manual for jihulab.com's gitlab-cn's MRs that touches caching-related files

How to set up and validate locally

1. Pull the current branch add_cache-assets_for_jh and create a new branch from the current branch.
2. Change scripts/gitlab_component_helpers.sh by adding a few spaces, commit and push.
3. See the pipeline and cache-assets:test, cache-assets:test as-if-foss, cache-assets:production appear.

Screenshot for jobs

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.