Added the possibility of specifying custom genesis accounts and balan…

…ces inside CLI tests (#8936)

Co-authored-by: Amaury <1293565+amaurym@users.noreply.github.com>

testutil/network/util.go

@@ -168,14 +168,14 @@ func initGenFiles(cfg Config, genAccounts []authtypes.GenesisAccount, genBalance
 		return err
 	}
 
-	authGenState.Accounts = accounts
+	authGenState.Accounts = append(authGenState.Accounts, accounts...)
 	cfg.GenesisState[authtypes.ModuleName] = cfg.Codec.MustMarshalJSON(&authGenState)
 
 	// set the balances in the genesis state
 	var bankGenState banktypes.GenesisState
 	cfg.Codec.MustUnmarshalJSON(cfg.GenesisState[banktypes.ModuleName], &bankGenState)
 
-	bankGenState.Balances = genBalances
+	bankGenState.Balances = append(bankGenState.Balances, genBalances...)
 	cfg.GenesisState[banktypes.ModuleName] = cfg.Codec.MustMarshalJSON(&bankGenState)
 
 	appGenStateJSON, err := json.MarshalIndent(cfg.GenesisState, "", "  ")