tests: add int. test for highrisk blocklist. (#4224)
tests: add int. test for highrisk blocklist. (#4224)


jsha/boulder,jcjones/boulder,letsencrypt/boulder,jsha/boulder,bmw/boulder,letsencrypt/boulder,bmw/boulder,letsencrypt/boulder,bmw/boulder,jcjones/boulder,jsha/boulder,jcjones/boulder,jcjones/boulder