cve_check: convert CVE_CHECK_IGNORE to CVE_STATUS

- Try to add convert and apply statuses for old CVEs
- Drop some obsolete ignores, while they are not relevant for current
  version

Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
Reviewed-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>