analyzers/container-scanning: Likely missing attribution in template, re-evaluating licensing

Hi 👋

While looking through the code, I found https://gitlab.com/gitlab-org/security-products/analyzers/container-scanning/-/blob/master/lib/gitlab.tpl which got committed without providing attribution/information on authorship nor linking to the origin repository. It seems to have its origins in https://github.com/aquasecurity/trivy/blob/main/contrib/gitlab.tpl (I contributed this in https://github.com/aquasecurity/trivy/pull/367 and https://github.com/aquasecurity/trivy/pull/468 initially to trivy upstream).

Since the repository https://gitlab.com/gitlab-org/security-products/analyzers is licensed under Gitlab EE, while this file was published under Apache-2.0 could you please re-evaluate if the License for this file is correct and include proper attribution?