slugbuilder: Retry curl requests
slugbuilder: Retry curl requests

Signed-off-by: Lewis Marshall <748e1641a368164906d4a0c0e3965345453dcc93@lmars.net>

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