Automatically remove old security scan result in products

[de-jcup]

With #19 sechub will automatically remove old scan results stored in SecHub database. Out of scope there is the delete of scan data inside security products itself.

If this issue is done/necessary, we have to do following:

• introduce a new event which has to be triggered by Job implemented in #19
• implement a service which is able to read the product results, get corresponding data for product itself from result and trigger product adapter to delete
• enhance adapter interface and implementations to provide the delete

[sven-dmlr]

Every product handles this in a different way. I would not build something like this into SecHub. The products should provide auto-removal of old data on their side. (Or the operator has to keep an eye on this)

Should we close this issue? What do you think @de-jcup ?