As pointed out by raul, bootstrapping and refreshing are not the same thing.
Bootstrapping is the initial setup (i.e., connect to some initial nodes to get
started). Refreshing is the process of refreshing the routing table.
* Rename triggerAutoBootstrap to autoBootstrap. This variable used to control
_triggering_ only but now completely disables automatic bootstrapping.
* Remove the BootstrapConfig. We introduced this before we switched to
functional options. Now that we're breaking the interfaces anyways, we might as
well use functional options all the way (easier to extend).
* Always query self (feedback from @raulk).
* Important: don't abort the bootstrap process if we timeout finding ourselves.
2) seed RT if empty before starting bootstrap incase 1 hasn't fired
3) pass bootstrap config as option while creating Dht
4) replace all bootstrap function with 1 function
