Rename Service Engineers to Support Engineers
As discussed in https://gitlab.com/gitlab-com/support/issues/440 service engineers are now support engineers. This change updates the SE job page and all other reference to service engineer.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
As discussed in https://gitlab.com/gitlab-com/support/issues/440 service engineers are now support engineers. This change updates the SE job page and all other reference to service engineer.