[#757] ir: Do not exclude node in maintenance mode from netmap

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/innerring/processors/netmap/cleanup_table_test.go

@@ -124,6 +124,21 @@ func TestCleanupTable(t *testing.T) {
 				}))
 			require.EqualValues(t, len(infos)-1, cnt)
 		})
+
+		t.Run("skip maintenance nodes", func(t *testing.T) {
+			cnt := 0
+			infos[1].SetMaintenance()
+			key := netmap.StringifyPublicKey(infos[1])
+			c.update(networkMap, 5)
+
+			require.NoError(t,
+				c.forEachRemoveCandidate(5, func(s string) error {
+					cnt++
+					require.NotEqual(t, s, key)
+					return nil
+				}))
+			require.EqualValues(t, len(infos)-1, cnt)
+		})
 	})
 }