Setup: (chain start is set to 8 validators)
- beacon node 0 - 3 validators
- beacon node 1 - 3 validators
- beaocn node 2 - 2 validators

1.) Upon a new finalized epoch, turn off validators from node 1.
What to verify:
* All 3 nodes can advance with the same head root/slot on every slot
* There's a new finalized epoch every epoch

2.) Upon a new finalized epoch, turn off validators from node 1 and 2.
What to verify:
* All 3 nodes can advance with the same head root/slot on every slot
* There's a no new finalized epoch

3.) Turn on validators from node 2.
What to verify:
* All 3 nodes can advance with same head root/slot on every slot
* There's a new finalized epoch every epoch before the next 2 epochs