Autogenerated bridge names would sometimes not work at all, just because the names weren't compliant. Made a digest function to make unique bridge names but compliant with the linux interfaces api

Ubuntu latest pointed to v24, which has issues with some packages. changed to v22.

- interface to talk wit hthe ned grpc api.
- ned can now be deployed in the desired node with the corresponding ip address
- added comments to the pod controller and fixed bugs, corresponding to the ned creation

This new image has differences with the previous l2sm-switch

So it can be better reused between the l2sm-switch and the l2sm-ned

Now its returned the interface number instead of openflow id, which will work better from the ned interface side. Added the main server code

Fixed replicasets rbac, which in some versions of k8s have to be better specified