Merge branch '468027-combined-trial-copy' into 'master'

Add copy for combined Ultimate + Duo Enterprise trial registration

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/165237



Merged-by: Pedro Pombeiro <noreply@pedro.pombei.ro>
Approved-by: Missy Davies <mdavies@gitlab.com>
Approved-by: Chad Woolley <cwoolley@gitlab.com>
Approved-by: Pedro Pombeiro <noreply@pedro.pombei.ro>
Reviewed-by: Pedro Pombeiro <noreply@pedro.pombei.ro>
Co-authored-by: david hamp-gonsalves <dhamp-gonsalves@gitlab.com>