retry once on a bulk sync failure
retry once on a bulk sync failure

Signed-off-by: Santhosh Manohar <0806b0927a65802677e1bc58a740a42f957953d7@docker.com>

WeiZhang555/libnetwork,medallia/libnetwork,fcrisciani/libnetwork,kolyshkin/libnetwork,kolyshkin/libnetwork,abhi/libnetwork,ityangchen/libnetwork,medallia/libnetwork,abhi/libnetwork,ityangchen/libnetwork,vdemeester/libnetwork,kolyshkin/libnetwork,mahak/libnetwork,WeiZhang555/libnetwork,docker/libnetwork,vdemeester/libnetwork,fcrisciani/libnetwork,mahak/libnetwork,docker/libnetwork,mahak/libnetwork,medallia/libnetwork,docker/libnetwork,allencloud/libnetwork,abhi/libnetwork,allencloud/libnetwork,vdemeester/libnetwork