Default value for "connect to onion services", and configuration

When we release HS client support, should it be enabled by default right away?

Or should we wait for the planned additional security/privacy/assurance work?

If we want to disable it, are we going to disable it in the build by default, or by changing the default for StreamPrefsconnect_to_onion_services?

There should probably be a config parameter, which should probably populate the stream pref default value? I'll see about making one of those.

CC @nickm @dgoulet