Fee middleware should have assertions.

[DavidNix]

See cosmos/ibc-go#396 for ibc-go's manual QA test plan.

As of this writing, this story is likely blocked because:

• Still in active development for ibc-go.
• cosmos/relayer support

[DavidNix]

We may need to expose ways to get the relayer address.

Per ibc-go team:

I wanted to to do some assertions on relayer accounts. I didn't see a way of getting the relayer addresses. We're working on packet incentivization which requires registering a relayer address on the counter party chain.

[DavidNix]

https://github.com/cosmos/ibc-go/pull/1553/files#diff-9a2a689096b5a2d214655a4fa9790246fd58d90d2a442c6b20c7389cbe026d3d

[DavidNix]

Confirmed this is still under active development in ibc-go team.

[Reecepbcups]

No one uses the Fee Module, does not make sense to add verifications for despite being in prod for over a year now. no adoption or UIs. At least 2 years out.

Checks should be upstream in relayer vs interchaintest