Use the new reports:type syntax in Secure jobs and ping usage

Instead of relying on job names for usage ping related to Secure jobs (sast, license_management, dast, etc.) we could move to the new reports:type syntax in .gitlab-ci.yml. ( see https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20390 )

Adding file_types for secure products in the file_type enum in job_artifact.rb will allow for a more robust counting of secure jobs via the file_type field, an index would have to be added because the existing one doesn't help.