Update Routes.yml for backup, restore, labels, notificationRules, notificationEndpoints, scrapers, swagger, checks, plugins, delete, ready

[davidby-influx]

The routes in the OSS are missing a lot of entries. We need to add them, and regenerate swagger.json.

• The /ready path is documented upstream (in oss/ready.yml).
• The Routes schema that backs the GET /api/v2 links response does not include ready.

If you add "ready": "/ready" to apiLinks["system"] in http/api_handler.go, the actual response will contain a key that isn't declared in the schema — a small divergence that's already present for many other keys (backup, restore, labels, notificationRules, notificationEndpoints, scrapers, swagger, checks, plugins, delete).

Update Routes.yml . A small PR against influxdata/openapi adding ready to system.properties, then regenerate influxdb/static/data/swagger.json