[DOCS] Add attributes for ESS breaking changes (#2283)

Author: jrodewig

shared/attributes.asciidoc

@@ -143,6 +143,8 @@ Elastic Cloud
 :ess-icon: image:https://doc-icons.s3.us-east-2.amazonaws.com/logo_cloud.svg[link="{ess-trial}", title="Supported on {ess}"]
 :ece-icon: image:https://doc-icons.s3.us-east-2.amazonaws.com/logo_cloud_ece.svg[link="{ess-trial}", title="Supported on {ece}"]
 :cloud-only: This feature is designed for indirect use by {ess-trial}[{ess}], {ece-ref}[{ece}], and {eck-ref}[{eck}]. Direct use is not supported.
+:ess-setting-change: {ess-icon} indicates a change to a supported {cloud}/ec-add-user-settings.html[user setting] for {ess}.
+:ess-skip-section: If you use {ess}, skip this section. {ess} handles these changes for you.
 
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 Commonly referenced paths in commonly referenced repositories.