Runner tag on job page has wrong CSS class

Summary

The runner tag on the job page has the bootstrap 3 CSS class .label and .label-priamry instead of the bootstrap 4 class .badge and .badge-primary.

Steps to reproduce

Open a job page.

Example Project

https://gitlab.com/gitlab-org/gitlab-ce/-/jobs/124252178

What is the current bug behavior?

Screenshot_2018-11-22_cache_gems___124243714____Jobs___GitLab_org_GitLab_Community_Edition

What is the expected correct behavior?

Screenshot_2018-11-22_cache_gems___124243714____Jobs___GitLab_org_GitLab_Community_Edition_1_

Possible fixes

Replace the css class with badge instead of label.

References:

Unfortunately I didn't find the haml file, that belongs to this snippet... Otherwise I had opened a merge request...