Cannot fetch prices with specified socks5 proxy
I'm getting these errors on macOS (but applies to other environments) when using a specified `--socks5ProxyXmrAddress='127.0.0.1:9050'`, with an external running instance of `tor`:

```
Mar-09 10:22:33.389 [JavaFX Application Thread] INFO  h.core.provider.price.PriceFeedService: We received an error requesting prices: baseUrlOfFaultyRequest=http://elaxlgigphpicy5q7pi5wkz2ko2vgjbq4576vic7febmx4xcxvk6deqd.onion/, error=haveno.core.provider.price.PriceRequestException: java.io.IOException: Error at doRequestWithProxy with url http://elaxlgigphpicy5q7pi5wkz2ko2vgjbq4576vic7febmx4xcxvk6deqd.onion/ and param getAllMarketPrices. Throwable=elaxlgigphpicy5q7pi5wkz2ko2vgjbq4576vic7febmx4xcxvk6deqd.onion: nodename nor servname provided, or not known 
Mar-09 10:22:33.389 [JavaFX Application Thread] INFO  haveno.core.provider.ProvidersRepository: Selected price provider: http://lrrgpezvdrbpoqvkavzobmj7dr2otxc5x6wgktrw337bk6mxsvfp5yid.onion/ 
Mar-09 10:22:33.389 [JavaFX Application Thread] WARN  h.core.provider.price.PriceFeedService: Exhausted price provider list, looping to beginning 
Mar-09 10:22:33.389 [JavaFX Application Thread] INFO  h.core.provider.price.PriceFeedService: We received an error at the request from provider http://elaxlgigphpicy5q7pi5wkz2ko2vgjbq4576vic7febmx4xcxvk6deqd.onion/. We select the new provider http://lrrgpezvdrbpoqvkavzobmj7dr2otxc5x6wgktrw337bk6mxsvfp5yid.onion/ and use that for a new request in 15 sec. 
```

The XMR wallet successfully syncs using the socks5 proxy, but price requests fail.

This issue requests fixing the failing price requests with a custom socks5 proxy.

My torcc file:

```
ControlPort 9051
SocksPort 127.0.0.1:9050
```