Change maintainer to 'GitLab, Inc.' in line with signing key
Cherry pick of https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/1821
Change project maintainer to read GitLab, Inc. in line with the signing key.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Cherry pick of https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/1821
Change project maintainer to read GitLab, Inc. in line with the signing key.