Submit the evidence detected by Hermes to all clients of the misbehaving chain

[ancazamfir]

Summary

Submit evidence detected by Hermes to all clients of the misbehaving chain

Problem Definition

When a chain misbehaves, IBC evidence is not submitted to all clients for that chain, just for the client that was updated with the conflicting header.
Because of this some clients for the misbehaving chain might be frozen late or not at all.

Proposal

Currently, with this configuration

[mode.clients]
misbehaviour = true

hermes monitors headers in MsgUpdateClient events for active clients and validates them against the chain's full node headers. In case of misbehaviour, hermes submits MsgSubmitMisbehaviour to the respective client and the client is then frozen.

We should attempt to submit the evidence to all clients of the misbehaving chains. Note that since different clients for a chain may have different security parameters, the conflicting header might not verify for other clients. In this case the relayer should skip the evidence submission.

Acceptance Criteria

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For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate milestone (priority) applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned