Merge branch '558781-fix-project-confidential-filter-and-add-specs' into 'master'

Search project confidential filter enable specs and refactor

See merge request !207948



Merged-by: John Mason <jmason@gitlab.com>
Approved-by: John Mason <jmason@gitlab.com>
Co-authored-by: Terri Chu <tchu@gitlab.com>