Merge branch '458803-add-source-property-to-job-2' into 'master'

Add source property to Ci::Build

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/157328



Merged-by: Max Fan <mfan@gitlab.com>
Approved-by: Ravi Kumar <rkumar@gitlab.com>
Approved-by: Max Fan <mfan@gitlab.com>
Reviewed-by: Max Fan <mfan@gitlab.com>
Co-authored-by: Aaron Huntsman <ahuntsman@gitlab.com>