[docs] Document 'rest-api.http.cookie-store-level' property

docs/modules/plugins/pages/plugin-rest-api.adoc

@@ -36,6 +36,13 @@ a|`true`
 |`false`
 |Enable logging of HTTP request/response headers and bodies (applied to the following content types only: `text/*`, `application/json`, `application/xml`)
 
+|`rest-api.http.cookie-store-level`
+a|`global`
+`story`
+`scenario`
+|`global`
+|The property that allows to configure level of storing cookies during execution requests.
+
 |===
 
 See xref:configuration:tests-configuration.adoc#_http_configuration[HTTP configuration] for more fine-grained control over the HTTP interactions.