public void putDomainByIngress(final String namespace, final String ingressName, final String domain) {
        Set<String> set = INGRESS_DOMAIN_MAP.computeIfAbsent(getKey(namespace, ingressName), k -> new HashSet<>());
        set.add(domain);
    }
Put tls domain by ingress.

@param namespace namespace
@param ingressName name
@param domain tls domain
shenyu-kubernetes-controller/src/main/java/org/apache/shenyu/k8s/cache/IngressSecretCache.java