Backports DOCSP-33389 to v6.0 (#267)

Backports 10gen/docs-ops-manager#263
[Jira](https://jira.mongodb.org/browse/DOCSP-33389)

[Build](https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=667c187cebce19f314427889)

Author: erabil-mdb

source/tutorial/enable-ssl-for-a-deployment.txt

@@ -37,6 +37,14 @@ MongoDB host. The |fqdn| can be the Common Name or the Subject
 Alternative Name of this host. You must install this |tls| certificate
 on the MongoDB host.
 
+.. warning::
+
+   The {+mdbagent+} from version 11.12.0.7384 requires that |tls|
+   certificates include a value in the Subject Alternative Name
+   field. Before upgrading to 11.12.0.7384, ensure that all |tls|
+   certificates used in your MongoDB deployment contain a |san-dns|.
+   To learn more, see :ref:`tls-cert-no-san`.
+
 Procedures
 ----------