Fix SANs for step-ca certificate

Co-authored-by: Herman Slatman <hslatman@users.noreply.github.com>

authority/tls.go

@@ -546,7 +546,7 @@ func (a *Authority) GetTLSCertificate() (*tls.Certificate, error) {
 	}
 
 	// Create initial certificate request.
-	cr, err := x509util.CreateCertificateRequest(a.config.CommonName, a.config.DNSNames, signer)
+	cr, err := x509util.CreateCertificateRequest(a.config.CommonName, sans, signer)
 	if err != nil {
 		return fatal(err)
 	}