message: Better assert in test infra
diff: @@ -597,11 +597,12 @@ class Network:
  for node in self.get_joined_nodes():
  with node.node_client() as c:
  r = c.get("commit")
  - commits.append(r.seqno)
  + commits.append(f"{r.view}.{r.seqno}")
  if [commits[0]] * len(commits) == commits:
  break
  time.sleep(0.1)
  - assert [commits[0]] * len(commits) == commits, "All nodes in sync"
  + expected = [commits[0]] * len(commits)
  + assert expected == commits, f"{commits} != {expected}"
  @contextmanager
  