[#313] cmd/node: Update netmap status in the right way

Update node network status via update status by getting the latest network
map and finding the node in it. This step is performed at the start of the
application and upon notification of a new epoch.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

cmd/neofs-node/main.go

@@ -5,7 +5,6 @@ import (
 	"flag"
 	"log"
 
-	"github.com/nspcc-dev/neofs-node/pkg/services/control"
 	"github.com/nspcc-dev/neofs-node/pkg/util/grace"
 	"go.uber.org/zap"
 )
@@ -55,8 +54,6 @@ func bootUp(c *cfg) {
 	serveGRPC(c)
 	bootstrapNode(c)
 	startWorkers(c)
-
-	c.setNetmapStatus(control.NetmapStatus_ONLINE)
 }
 
 func wait(c *cfg) {