[DOCS] Deprecate SSL settings (#29990)

docs/setup/settings.asciidoc

@@ -43,11 +43,19 @@ Elasticsearch. This value must be a positive integer.
 certificate and key files. These files are used to verify the identity of Kibana to Elasticsearch and are required when 
 `xpack.ssl.verification_mode` in Elasticsearch is set to either `certificate` or `full`.
 
+`elasticsearch.ssl.ca:`:: Optional setting that enables you to specify a path to
+the PEM file for the certificate authority for your Elasticsearch instance.
+deprecated[5.3.0,Replaced by `elasticsearch.ssl.certificateAuthorities`]
+
 `elasticsearch.ssl.certificateAuthorities:`:: Optional setting that enables you to specify a list of paths to the PEM file for the certificate
 authority for your Elasticsearch instance.
 
 `elasticsearch.ssl.keyPassphrase:`:: The passphrase that will be used to decrypt the private key. This value is optional as the key may not be encrypted.
 
+`elasticsearch.ssl.verify:`:: *Default: true* To disregard the validity of SSL
+certificates, change this setting’s value to `false`.
+deprecated[5.3.0,Replaced by `elasticsearch.ssl.verificationMode`]
+
 `elasticsearch.ssl.verificationMode:`:: *Default: full* Controls the verification of certificates presented by Elasticsearch. Valid values are `none`, `certificate`, and `full`.
 `full` performs hostname verification, and `certificate` does not.
 
@@ -169,6 +177,10 @@ By turning this off, only the layers that are configured here will be included.
 
 `server.ssl.enabled:`:: *Default: "false"* Enables SSL for outgoing requests from the Kibana server to the browser. When set to `true`, `server.ssl.certificate` and `server.ssl.key` are required
 
+`server.ssl.cert:`:: Path to the PEM-format SSL certificate. This file enables
+SSL for outgoing requests from the Kibana server to the browser.
+deprecated[5.3.0,Replaced by `server.ssl.certificate`]
+
 `server.ssl.certificate:` and `server.ssl.key:`:: Paths to the PEM-format SSL certificate and SSL key files, respectively.
 
 `server.ssl.certificateAuthorities:`:: List of paths to PEM encoded certificate files that should be trusted.