[DOCS] Set up temporary redirects for new remote clusters docs (#98398)

docs/reference/redirects.asciidoc

@@ -1918,3 +1918,13 @@ See <<delete-synonyms-set>>
 === Create or delete synonyms sets API
 
 See <<put-synonyms-set>>
+
+[role="exclude",id="remote-clusters-api-key"]
+=== Add remote clusters using API key authentication
+
+coming::[8.10]
+
+[role="exclude",id="remote-clusters-cert"]
+=== Add remote clusters using TLS certificate authentication
+
+coming::[8.10]