Upgrade to Lab 3.x.x.  Also bumped versions of Hoek and Hapi.

After moving to Lab 3.x.x, the following line is the only one missing coverage:

```
var settings = Hoek.applyToDefaults(internals.defaults, options || {});
```

However, because poop checks if it's been initialized during registration, I can't simply add another test to exercise `options`.  I had a few ideas on how to work around this, but I'd be more interested in how @hueniverse would like it implemented.