R4R: v0.29 to v0.30 genesis port script (v2)

[cwgoes]

edit: To test this (blocked on cosmos/cosmos-sdk#3428), run:

./v0.29-to-v0.30.py export.json genesis.json
cp genesis.json ~/.gaiad/config/genesis.json
make test_sim_gaia_custom_genesis_fast

Manually performs the following state modifications:

• Renames "STAKE" to "stake"
• Changes sdk.Dec to sdk.Int for validator tokens
• Sets new auth parameters
• Alters distribution state to port from v0.29.x ("piggy bank") to v0.30.x ("F1").
• Renames x/stake to x/staking
• Renames a few other minor fields

Are there any other changes we need to make in genesis? Comment if so.

If you're having trouble exporting, try cosmos/cosmos-sdk#3304.

[cwgoes]

Yes genesis requirements have changed based on cosmos/cosmos-sdk#3243 (comment)

namely fields are different in UnbondingDelegation and Redelegation objects (x/staking/types/delegation.go), to convert from the old struct to the new struct we will need to populate the fields of one Entry in either parent object

There weren't any unbonding delegations or redelegations in the state export I'm testing with; if there are in the final GoS snapshot we'll have to do this too.

[cwgoes]

Branch for testing (v0.30.0 with the genesis simulation cherry-picked):
https://github.com/cosmos/cosmos-sdk/tree/cwgoes/gos-genesis-port-working

[cwgoes]

@zmanian The simulation is working from my tests now (just pushed a few final fixes).

I still think we might need to sort the coins in each account, will do that shortly.

[cwgoes]

I still think we might need to sort the coins in each account, will do that shortly.

This is done now too.