[Test Gap][lldp] Verify the lldp entries in APPL_DB after restart syncd/swss

[ZhaohuiS]

Test Gap Description

We have an issue that there is only lldp_rem_time_mark for eth0

It still has the following syslog:
2024 Dec 2 18:22:18.291732 bjw2-can-7260-3 WARNING snmp#snmp-subagent [sonic_ax_impl] WARNING: Exception when updating lldpRemTable: 'lldp_rem_index'

It always happened for eth0, the LLDP_ENTRY_TABLE in APPL_DB for eth0 is like this:
{'lldp_rem_time_mark': '3886'}

It's fixed by
sonic-net/sonic-dbsyncd#71

Test Plan

Issue reproduce steps:

docker exec syncd supervisorctl stop syncd
docker exec swss supervisorctl stop orchagent

docker exec syncd supervisorctl start syncd
docker exec swss supervisorctl start orchagent

Check the LLDP entries for all interfaces in APPL_DB are full and completed.

Test environment

No response

Attach files (if any)

No response