Minimize DHT bandwidth usage: switch node to dhtclient profile

[lidel]

User installs IPFS Desktop. Has no files, but network monitor shows kilobytes of data going in and out.

Solution

Until we have bandwidth controls in place, the go-ipfs node spawned by desktop app should stop acting as a DHT server. It can be done by passing the --routing=dhtclient flag to ipfs daemon.

Y/n?

Are there any downsides to this change? It seems to make sense for "desktop" nodes:

Eventually, we'll probably make this the default for non-server profiles (saves battery and will actually make the network faster as we'll have fewer flaky DHT nodes). – @Stebalien @ discuss.ipfs.io

[hacdias]

Yeah, but I think we should also provide a setting for this. I'll do this ASAP.