Defines a group of cells within which replica/rdonly traffic can be routed across cells. By default, Vitess does not allow traffic between replicas that are part of different cells. Between cells that are not in the same group (alias), only master traffic can be routed.
Deletes the CellsAlias for the provided alias. After deleting an alias, cells that were part of the group are not going to be able to route replica/rdonly traffic to the rest of the cells that were part of the grouping.