Getting an error in one of the bor nodes in devnet when trying to run
the "state-sync" scenario:
```
[EROR] [01-03|16:55:44.179] cli.StartRpcServer error err="could not start separate Websocket RPC api at port 8546: listen tcp 127.0.0.1:8546: bind: address already in use"
```
This happens for scenarios with more than 1 node.
Digging further this regressions has happened due to this change:
https://github.com/ledgerwatch/erigon/pull/8909
This PR fixes this by updating the devnet `NodeArgs` struct to set the
corresponding `--ws.port` `arg` tag which now exists.
* fix "genesis hash does not match" when dev nodes connect
The "dev" nodes need to have the same --miner.etherbase in order to
generate the same genesis ExtraData by DeveloperGenesisBlock(). Override
DevnetEtherbase global var that's used if --miner.etherbase is not
passed. (for NonBlockProducer case)
* fix missing private key for the hardcoded DevnetEtherbase
Fixes panic if SigKey is not found. Bor non-producers will use a default
`DevnetEtherbase` while Dev nodes modify it. Save hardcoded
DevnetEtherbase/DevnetSignPrivateKey into accounts so that SigKey can
recover it.
* refactor devnet.node to contain Node config
This avoids interface{} type casts and fixes an error with
Heimdall.validatorSet == nil
* add connection retries to rpcCall and Subscribe of requestGenerator
Fixes "connection refused" errors due to node not ready to handle early
RPC requests.
* fix deadlock in Heimdall.NodeStarted
* fix GetBlockByNumber
Fixes "cannot unmarshal string into Go struct field body.transactions of
type jsonrpc.RPCTransaction"
* demote "no of blocks on childchain is less than confirmations
required" to Info (#8626)
* demote "mismatched pending subpool size" to Debug (#8615)
* revert wiggle testing code
