Rework peer connection status based on the update channel existence (#1213)

With this change, we don't need to update all peers on startup. We will
check the existence of an update channel when returning a list or single peer on API.
Then after restarting of server consumers of API will see peer not
connected status till the creation of an updated channel which indicates
peer successful connection.

management/server/file_store.go

@@ -111,10 +111,6 @@ func restore(file string) (*FileStore, error) {
 		for _, peer := range account.Peers {
 			store.PeerKeyID2AccountID[peer.Key] = accountID
 			store.PeerID2AccountID[peer.ID] = accountID
-			// reset all peers to status = Disconnected
-			if peer.Status != nil && peer.Status.Connected {
-				peer.Status.Connected = false
-			}
 		}
 		for _, user := range account.Users {
 			store.UserID2AccountID[user.Id] = accountID