More debug messages for failover

[munakoiso]

I caught a failed switchover test.
Check successful switchover with a dead primary and autofailover = and, quorum_commit = no.
Here is the election log
Host2:

2024-08-29 05:57:58,752 DEBUG:	No lock instance for enter_election. Creating one.
2024-08-29 05:57:58,760 INFO:	Changing election status to: cleanup
2024-08-29 05:57:58,765 DEBUG:	Manage election
2024-08-29 05:57:58,767 DEBUG:	HA hosts are: ['pgconsul_postgresql1_1.pgconsul_pgconsul_net', 'pgconsul_postgresql2_1.pgconsul_pgconsul_net', 'pgconsul_postgresql3_1.pgconsul_pgconsul_net']
2024-08-29 05:57:58,768 INFO:	Changing election status to: registration
2024-08-29 05:58:08,785 INFO:	Changing election status to: selection
2024-08-29 05:58:08,789 DEBUG:	HA hosts are: ['pgconsul_postgresql1_1.pgconsul_pgconsul_net', 'pgconsul_postgresql2_1.pgconsul_pgconsul_net', 'pgconsul_postgresql3_1.pgconsul_pgconsul_net']
2024-08-29 05:58:08,790 ERROR:	Failed to get 'pgconsul_postgresql2_1.pgconsul_pgconsul_net' lsn for elections.
2024-08-29 05:58:08,790 ERROR:	Failed to get 'pgconsul_postgresql3_1.pgconsul_pgconsul_net' lsn for elections.
2024-08-29 05:58:08,791 INFO:	Collected votes are: {}
2024-08-29 05:58:08,791 ERROR:	Not enough votes for quorum.

Host3:

2024-08-29 05:57:58,810 DEBUG:	No lock instance for enter_election. Creating one.
2024-08-29 05:57:58,819 DEBUG:	Participate in election
2024-08-29 05:57:58,828 INFO:	Waiting 1 for election status done
2024-08-29 05:57:59,830 INFO:	Waiting 1.1661394208107576 for election status done

Definitely, it's a bug. I think the lsn is none, but I'm not sure. If we add more debug messages, we can find the problem when the test fails again.