3.2-2020.10.28.23.06

New minor release due to change in validation behaviour.

• Use strict validation (rpki.validator.strict-validation=true) by default, with minor differences from draft-ietf-sidrops-6486bis-00.
• Use case insensitive URI schemes in object validations.
• Validate that RPKI repository object was found at the correct location.
• Stricter checking of certificate Subject and Issuer DN.
• Decrease bootstrap time by checking rsync repositories earlier after they are first encountered, and by triggering revalidation when needed.
• Fix Docker tag creation during the release.
• Add docker image for rtr server.