[BFT] Create integration test where DKG and consensus committees form a symmetric difference.

[durkmurder]

Context

We would like to test a scenario where DKG committee and consensus committee after recovery contain unique identities that aren't part of opposite sets. Formally speaking we have two sets A and B, we would like to have:

• ∣𝐴 ∖ 𝐵∣ = 1
• ∣𝐵 ∖ 𝐴∣ = 1

Create an integration test that reproduces next behavior:

• network fails DKG in epoch 0 and enters EFM
• while being in EFM node A gets ejected
• operators runs a local KG having all the private keys but without node B
• operator creates an epoch recovery transaction with a committee which excludes the node A and uses DKG from previous step without node B
• recovery transaction gets accepted with symmetrically different sets of consensus committee and DKG committee
• epoch 1 is successfully recovered
• network is able to enter epoch 1
• network is able to finalize blocks in epoch 1