IBC chain genesis parameters

[blewater]

The IBC scripts and documentation change and/or advocate for these genesis parameters modifications:

    sed -i 's#"172800s"#"200s"#g' node$i/config/genesis.json
    sed -i 's/timeout_commit = "5s"/timeout_commit = "1s"/g' node$i/config/config.toml
    sed -i 's/timeout_propose = "3s"/timeout_propose = "1s"/g' node$i/config/config.toml
    sed -i 's/index_all_keys = false/index_all_keys = true/g' node$i/config/config.toml

The chain must have a large value for staking.params.historical_entries. The default is "10000" and this should work with "1000", but no relayer will work if it is set to 0.