RequestCaptureStream: dumpDefault, haveNonRawStreams, zero ring after dump
RequestCaptureStream: dumpDefault, haveNonRawStreams, zero ring after dump

- Add 'dumpDefault' option to also dump captured records on the
  *default* ring (i.e. those without a req_id field). Useful for
  when the app hasn't necessarily been nice passing around `req.log`
  and logging on that.
- Zero out the ring after dumping captured records so don't get
  those records *re-dumped* after a second log.warn/error.
- Perf optimization to not serialize if don't have to.

AnyPresence/node-restify,meleslilijing/node-restify,djensen47/node-restify,datalanche/node-restify,joyent/node-restify,drewwells/node-restify,hekike/node-restify,myroid/node-restify,alfonsoc/node-restify,twistedstream/node-restify,iwarren/node-restify,trentm/node-restify,thomaspeklak/node-restify,mgesmundo/logged-errors,type/node-restify,eodgooch/node-restify,sean3z/node-restify,KenanSulayman/node-restify,tapquo/node-restify,OiNutter/node-restify,micahr/node-restify,andyburke/node-restify,noseglid/node-restify,redmobile/node-restify,liurq/node-restify,rprieto/node-restify,BryanDonovan/node-restify,gcochard/node-restify,myroid/node-restify,jokesterfr/node-restify,restify/node-restify,skynet/node-restify,restify/node-restify,jmealo/node-restify,wilhelmmatilainen/node-restify,rafael-custodio/node-restify,wprater/node-restify,heiparta/node-restify,gwicke/node-restify,eetuuuu/node-restify,mboudreau/node-restify,ojengwa/node-restify,jameswomack/node-restify,tempbottle/node-restify,VaclavObornik/node-restify,alex-zhang/node-restify,mcavage/node-restify,ernestopino/node-restify,gergelyke/node-restify,brycebaril/node-restify,mauricionr/node-restify,rogervaas/node-restify,zhuangya/node-restify,cat2608/node-restify,sahat/node-restify,AsaAyers/node-restify,cjpark87/node-restify,13W/node-restify,silverbucket/node-restify,ekristen/node-restify,kusor/node-restify,restify/plugins