[lag_id] Add lagid to free_list when LC absent for 30 minutes #542
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Description
When LC is absent for 30 minutes, the database cleanup kicks in. When LagId is released, it needs to be appended to the SYSTEM_LAG_IDS_FREE_LIST
This PR works with the following 2 PRs:
sonic-net/sonic-swss#3303
sonic-net/sonic-buildimage#20369
Motivation and Context
To address the issue of the same lagid could be used by two Portchannels in two different linecards. This issue occurs when reboot many Linecards together with 20 seconds delay in each LC reboot.
How Has This Been Tested?
Additional Information (Optional)