Following #6821, this PR continues to convert certbot integration tests into certbot-ci.
This PR add tests covering checks on L531 to the end on tests/certbot-boulder-integration.sh. Previous lines are covered with existing tests, or by #6946, #6947, #6948, #6949, #6951, #6952.
* Add tests
* Add load resource
* Separate OCSP in two tests
* Copy new asset
* Load the asset
* Add coverage limit