Lb secret manger support (#3872)

* Added doc changes for secret manager support

Added doc changes for secret manager support

* updated changes

website/docs/d/is_lb_listener.html.markdown

@@ -33,9 +33,11 @@ In addition to all argument references listed, you can access the following attr
 - `accept_proxy_protocol` - (Boolean) If set to `true`, this listener will accept and forward PROXY protocol information. Supported by load balancers in the `application` family (otherwise always `false`). Additional restrictions:- If this listener has `https_redirect` specified, its `accept_proxy_protocol` value must  match the `accept_proxy_protocol` value of the `https_redirect` listener.- If this listener is the target of another listener's `https_redirect`, its  `accept_proxy_protocol` value must match that listener's `accept_proxy_protocol` value.
 
 - `certificate_instance` - (List) The certificate instance used for SSL termination. It is applicable only to `https`protocol.
-Nested scheme for `certificate_instance`:
+	Nested scheme for `certificate_instance`:
 	- `crn` - (String) The CRN for this certificate instance.
 
+	-> **NOTE:** Certificate Manager is deprecated. Migrate your load balancer certificates from Certificate Manager to Secrets Manager.
+
 - `connection_limit` - (Integer) The connection limit of the listener.
 
 - `created_at` - (String) The date and time that this listener was created.

website/docs/d/is_lb_listeners.html.markdown

@@ -33,6 +33,9 @@ In addition to all argument references listed, you can access the following attr
 	- `certificate_instance` - (List) The certificate instance used for SSL termination. It is applicable only to `https`protocol.
 		Nested scheme for `certificate_instance`:
 		- `crn` - (String) The CRN for this certificate instance.
+
+		-> **NOTE:** Certificate Manager is deprecated. Migrate your load balancer certificates from Certificate Manager to Secrets Manager.
+
     - `connection_limit` - (Integer) The connection limit of the listener.
     - `created_at` - (String) The date and time that this listener was created.
     - `default_pool` - (List) The default pool associated with the listener.

website/docs/r/is_lb_listener.html.markdown

@@ -187,6 +187,9 @@ Review the argument references that you can specify for your resource.
       - Have the  same protocol as this listener, or have a compatible protocol. At present, the compatible protocols are http and https.
       - Not already be the default_pool for another listener 
 - `certificate_instance` - (Optional, String) The CRN of the certificate instance, it is applicable(mandatory) only to https protocol.
+
+-> **NOTE:** Certificate Manager is deprecated. Migrate your load balancer certificates from Certificate Manager to Secrets Manager.
+
 - `connection_limit` - (Optional, Integer) The connection limit of the listener. Valid range is **1 to 15000**. Network load balancer do not support `connection_limit` argument.
 - `https_redirect_listener` - (Optional, String) ID of the listener that will be set as http redirect target.
 - `https_redirect_status_code` - (Optional, Integer) The HTTP status code to be returned in the redirect response, one of [301, 302, 303, 307, 308].