fix: override retry config, enforce large retry times, and fix min gas amount

[SebastianElvis]

This PR fixes a number of issues reported during merging relayer to infra.
Specifically, this PR

1. overrides retry config in the relayer dependency, such that all called functions in the relayer dependency apply our relayer config
2. increases the retry time to 20 by default, and increases the retry interval to 1 second from 0.4 second
3. sets min-gas-amount: 1 in example config

Rationale:

• 12 aims at fixing the height requested is too high issue. The reason is that QueryLatestHeights returns the latest height that may not be committed yet. This makes any ABCI query with this height fails due to height requested is too high error. This is an known issue Light Client: "height requested is too high" thrown when querying against the latest height tendermint/tendermint#7641 and is fixed by a later PR to Tendermint. All we can do before bumping Tendermint is to retry more until the chain grows beyond that height.
• 3 aims at fixing the Error building or broadcasting transaction issue. The reason is as described here.