nsqadmin: fix synchronization for RealHTTPAddr
nsqd: fix Real*Addr synchronization
nsqadmin: don't resolve addresses up front
nsqd: don't parse addresses up front
nsqlookupd: fix Real*Addr synchronization
nsqlookupd: don't parse addresses up front
nsqadmin: remove binary
nsqadmin: only parse templates once
nsqadmin: fix test