server/v2: failed to restart node with exported genesis

[akhilkumarpilli]

Below issue encountered when testing genesis export in v2:

• After exporting genesis, ran unsafe-reset-all command, replaced the original genesis file with the exported one, and tried restarting the node.
• The node fails to start with this error: failed to start servers: error during handshake: error on replay: validator set is nil in genesis and still empty after InitChain.

[julienrbrt]

I think after @sontrinh16 refactors in genesis handling for genesis validators, we can re-add genesis validators in Genutil v2 exported state.

Then it should fix this I believe.