Correct openapi ignore mode to filter schemas

Also rename openapi-mode options

* follow-acl -> follow-privileges
* ignore-acl -> ignore-privileges

test/io-tests/configs/expected/no-defaults-with-db.config

@@ -17,7 +17,7 @@ jwt-role-claim-key = ".\"a\".\"role\""
 jwt-secret = "OVERRIDEREALLYREALLYREALLYREALLYVERYSAFE"
 jwt-secret-is-base64 = true
 log-level = "info"
-openapi-mode = "ignore-acl"
+openapi-mode = "ignore-privileges"
 openapi-server-proxy-uri = "https://example.org/api"
 raw-media-types = "application/vnd.pgrst.db-config"
 server-host = "0.0.0.0"