public void setDefaultK8sSecretNamespace(final String defaultK8sSecretNamespace) {
            this.defaultK8sSecretNamespace = defaultK8sSecretNamespace;
        }
Set default kubernetes secret namespace.

@param defaultK8sSecretNamespace default kubernetes secret namespace
shenyu-common/src/main/java/org/apache/shenyu/common/config/NettyHttpProperties.java