Terraform report name in merge request

Summary

One of our customers is using the feature Terraform integration in Merge Requests

However, when using a variable as an artifact name:

  environment:
    name: test
  artifacts:
    name: $CI_ENVIRONMENT_SLUG
    paths:
      - ./plan.json
    reports:
      terraform: plan.json

The variable is not expanded in the MR page:

As you can see it lists it as $CI_ENVIRONMENT_SLUG instead of expanding that variable.

Steps to reproduce

I created an example here:

Example Project

https://gitlab.com/jdasmarinas/terraform-test

What is the current bug behavior?

Shows the variable as the report name.

What is the expected correct behavior?

Should expand the variable instead.

Relevant logs and/or screenshots

See the screenshot above

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

Expand for output related to GitLab environment info


(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:env:info`)

(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)

Results of GitLab application Check

Expand for output related to the GitLab application check

(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)
(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
(we will only investigate if the tests are passing)