[Interchaintest] Installment # 1 - Foundation

[jim380]

Overview

This PR serves the following purposes:

1. Fix for ibc tendermint client integration in app.go
2. The first installment of introducing repeatable and diagnostic tests for IBC functionalities via interchaintest.

Future Installments

• Chain start test
• Chain upgrade test
• Module specific test
• State sync test
• Interchain account test
• Packer forwarder test
• And more

Testing

Before proceeding, make sure you change SedaExponent to 6 in app/params/config.go. This is because in interchaintest v8.0.0 the default only has hardcoded values now which were tailored to e6.

$ docker build --build-arg GITHUB_TOKEN=<> -t sedaprotocol/seda-chaind-e2e -f dockerfiles/Dockerfile.e2e . --no-cache
$ go test -timeout 10m -v -run TestSedaGaiaIBCTransfer ./interchaintest

You should see a passing result:

--- PASS: TestSedaGaiaIBCTransfer (121.82s)
PASS
ok      github.com/sedaprotocol/seda-chain/interchaintest       122.459s

[hacheigriega]

I think because we don't need to migrate from params store, we can do without legacy params subspaces. What do you think?

From the ibc-go upgrade doc:
"For new chains which do not rely on migration of parameters from x/params, an expected interface has been added for each module. This allows chain developers to provide nil as the legacySubspace argument to NewKeeper functions." https://github.com/cosmos/ibc-go/releases/tag/v8.0.0