feat: do not strip all cookies for core service

[olevski]

The core service will be using sticky sessions to allow it to scale without losing all performance benefits from the local cache.

When the ui-server accesses the core-service it will do so through the gateway that will then route back outside of the cluster. The sticky sessions cookie therefore needs to be applied and preserved at this point. But as it currently stands the noCookie middleware strips all cookies including the cookie for the sticky session.