[202405][FC] remove FC delay field #3584
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What I did
Simplify approach to delaying counters on warm boot and fast boot. Removed FLEX_COUNTER_DELAY_STATUS_FIELD and instead postpone all FC processing to happen after apply view to not delay data plane configuration.
The CONFIG_DB should not be updated in runtime anymore for counters to be delayed.
How I did it
Removed FLEX_COUNTER_DELAY_STATUS_FIELD and corresponding counterpoll commands (that weren't supposed to be used by user directly anyway). Updated db_migrator.py to remove that field.
How to verify it
Ran fast-reboot from 202405. Made sure no delay field present, counters are enabled and delayed.
Previous command output (if the output of a command-line utility has changed)
New command output (if the output of a command-line utility has changed)