logaggregator: fix race in flush loop
logaggregator: fix race in flush loop

Move response flushing & writing into the same goroutine.

Signed-off-by: Ben Burkert <73675debcd8a436be48ec22211dcf44fe0df0a64@benburkert.com>

kgrz/flynn,justintung/flynn,felixrieseberg/flynn,Brandywine2161/flynn,philiplb/flynn,josephglanville/flynn,Brandywine2161/flynn,flynn/flynn,technosophos/flynn,technosophos/flynn,supermario/flynn,jzila/flynn,GrimDerp/flynn,felixrieseberg/flynn,supermario/flynn,shads196770/flynn,whouses/flynn,tonicbupt/flynn,ozum/flynn,Brandywine2161/flynn,clifff/flynn,lmars/flynn,shads196770/flynn,flynn/flynn,schatt/flynn,pkdevbox/flynn,benbjohnson/flynn,kgrz/flynn,ozum/flynn,tonicbupt/flynn,benbjohnson/flynn,justintung/flynn,supermario/flynn,pkdevbox/flynn,schatt/flynn,tonicbupt/flynn,flynn/flynn,supermario/flynn,philiplb/flynn,whouses/flynn,TribeMedia/flynn,pkdevbox/flynn,rikur/flynn,shads196770/flynn,TribeMedia/flynn,GrimDerp/flynn,benbjohnson/flynn,clifff/flynn,clifff/flynn,justintung/flynn,josephglanville/flynn,jzila/flynn,GrimDerp/flynn,kgrz/flynn,justintung/flynn,ozum/flynn,philiplb/flynn,arekkas/flynn,kgrz/flynn,tonicbupt/flynn,arekkas/flynn,felixrieseberg/flynn,felixrieseberg/flynn,jzila/flynn,GrimDerp/flynn,josephglanville/flynn,technosophos/flynn,schatt/flynn,rikur/flynn,GrimDerp/flynn,josephglanville/flynn,supermario/flynn,whouses/flynn,whouses/flynn,rikur/flynn,pkdevbox/flynn,rikur/flynn,ozum/flynn,schatt/flynn,TribeMedia/flynn,josephglanville/flynn,flynn/flynn,schatt/flynn,benbjohnson/flynn,clifff/flynn,Brandywine2161/flynn,tonicbupt/flynn,kgrz/flynn,benbjohnson/flynn,jzila/flynn,felixrieseberg/flynn,TribeMedia/flynn,Brandywine2161/flynn,lmars/flynn,Brandywine2161/flynn,technosophos/flynn,lmars/flynn,technosophos/flynn,justintung/flynn,josephglanville/flynn,whouses/flynn,TribeMedia/flynn,GrimDerp/flynn,clifff/flynn,shads196770/flynn,ozum/flynn,pkdevbox/flynn,whouses/flynn,benbjohnson/flynn,shads196770/flynn,TribeMedia/flynn,kgrz/flynn,justintung/flynn,pkdevbox/flynn,lmars/flynn,arekkas/flynn,philiplb/flynn,rikur/flynn,clifff/flynn,lmars/flynn,ozum/flynn,supermario/flynn,rikur/flynn,flynn/flynn,philiplb/flynn,jzila/flynn,arekkas/flynn,shads196770/flynn,schatt/flynn,arekkas/flynn,jzila/flynn