pezkuwi-subxt/substrate/test-utils/runtime/src/test_json/README.md

`default_genesis_config.json` file has been generated by the following code:
```
	use crate::genesismap::GenesisStorageBuilder;
	#[test]
	fn write_default_config_to_tmp_file() {
		let j = json::to_string(&GenesisStorageBuilder::default().genesis_config()).unwrap().into_bytes();
		let mut file = fs::OpenOptions::new()
			.create(true)
			.write(true)
			.open("/tmp/default_genesis_config.json").unwrap();
		file.write_all(&j);
	}
```

`:code` field has been manually truncated to reduce file size. Test is only
comparing keys, not the values.

`default_genesis_config_invalid.json` is just a broken copy of
`default_genesis_config.json` with `authorities` field renamed to
`renamed_authorities`.


`default_genesis_config_invalid.json` is just an imcomplete copy of
`default_genesis_config.json` with `babe::authorities` field removed.