(chore): Use Values for blockchain config

mentioned in merge request !2 (closed)

@markeharding Thoughts on this MR? Looks to be working OK on boost campaigns review sandbox. I think that the empty values might crash other sandboxes. Is it safe to add "default" values to values.yml?

looks good. other review sites shouldn't be an option as it should always fall back to values.yaml.

merged

mentioned in commit 0dd65ec0