Correct openapi ignore mode to filter schemas

Also rename openapi-mode options

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

test/io-tests/test_io.py

@@ -425,6 +425,21 @@ def test_invalid_role_claim_key(invalidroleclaimkey, defaultenv):
                 print(line)
 
 
+@pytest.mark.parametrize("invalidopenapimodes", FIXTURES["invalidopenapimodes"])
+def test_invalid_openapi_mode(invalidopenapimodes, defaultenv):
+    "Given an invalid openapi-mode, Postgrest should exit with a non-zero exit code."
+    env = {
+        **defaultenv,
+        "PGRST_OPENAPI_MODE": invalidopenapimodes,
+    }
+
+    with pytest.raises(PostgrestError):
+        dump = dumpconfig(CONFIGSDIR / "defaults.config", env=env)
+        for line in dump.split("\n"):
+            if line.startswith("openapi-mode"):
+                print(line)
+
+
 def test_iat_claim(defaultenv):
     """
     A claim with an 'iat' (issued at) attribute should be successful.