Adds Wildcard DNS record disclaimers (#1256)

Adds `ip.es.io` disclaimer to warning and [email protected] for
reporting security issues.

---------

Co-authored-by: shainaraskas <[email protected]>

Author: KOTungseth

deploy-manage/deploy/cloud-enterprise/ece-wildcard-dns.md

@@ -10,6 +10,8 @@ mapped_pages:
 
 ::::{warning} 
 Don't use `ip.es.io` for production systems. Set up your own domain name and DNS resolver for production. We do not guarantee uptime with `ip.es.io`.
+
+`ip.es.io` is intended for use only by {{ece}} customers. We may, acting in our sole discretion, immediately terminate, suspend, or block any unauthorized users or uses without notice.  
 ::::
 
 By default, {{ece}} uses the external `ip.es.io` service provided by Elastic to resolve virtual {{es}} cluster host names in compliance with RFC1918. The service works by resolving host names of the form `<ip>.ip.es.io` to `<ip>`. In the case of {{ece}}, each cluster is assigned a virtual host name of the form `<cluster id>.<proxy ip address>.ip.es.io:<port>`, such as `6dfc65aae62341e18a8b7692dcc97186.10.8.156.132.ip.es.io:9243`. The `ip.es.io` service simply resolves the virtual host name of the cluster to the proxy address which is specified during installation, `10.8.156.132` in our example, so that client requests are sent to the proxy. The proxy then extracts the cluster ID from the virtual host name of the cluster and uses its internal routing table to route the request to the right allocator.
@@ -18,3 +20,5 @@ The `ip.es.io` service is provided to help you evaluate {{ece}} without having t
 
 A wildcard certificate is enabled based on the deployment domain name. For more information on modifying the deployment domain name, check [Configure endpoints](change-endpoint-urls.md). The deployment domain name also determines the endpoint URLs that are displayed in the Cloud UI.
 
+Report security issues to [email protected]. 
+