Update deployment model in Fulfillment page
Part of https://gitlab.com/gitlab-org/customers-gitlab-com/issues/524
To be merged once https://gitlab.com/gitlab-org/customers-gitlab-com/merge_requests/396 is done
Part of https://gitlab.com/gitlab-org/customers-gitlab-com/issues/524
To be merged once https://gitlab.com/gitlab-org/customers-gitlab-com/merge_requests/396 is done