Generate a set of certificates for testing

#{messages['net.ihe.gazelle.atna.CertificateCreation']} #{messages['net.ihe.gazelle.atna.CertificateAuthority_2']} #{messages['net.ihe.gazelle.atna.CountryC']} #{messages['net.ihe.gazelle.atna.OrganizationO']} #{messages['net.ihe.gazelle.atna.CommonNameCN']} Valid certificate Self-signed certificate Expired certificate Unknown certificate Revoked certificate Corrupted certificate Wrong key certificate