Add example for overriding example test parameters

Add a commented-out example for overriding example test parameters to
the config file template like we have it for most other settings.

Related ticket: https://progress.opensuse.org/issues/166658

etc/openqa/openqa.ini

@@ -325,3 +325,11 @@ concurrent = 0
 # home =
 # username = openqa-user
 # ssh_key_file = ~/.ssh/id_rsa
+
+# Override form values for creating example test
+#[test_preset example]
+#title = Create example test
+#info = Some info that will show up on the "Create … -> Example test" page
+#casedir = https://github.com/os-autoinst/os-autoinst-distri-example.git
+#distri = example
+#build = openqa