[system-health] Fix error log system_service'state' while doing config reload #144
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Why I did it
While doing config reload, FEATURE table may be removed and re-add. During this process, updating FEATURE table is not atomic. It could be that the FEATURE table has entry, but each entry has no field. This PR introduces a retry mechanism to avoid this.
How I did it
Introduces a retry mechanism to avoid this.
How to verify it
Manual test.
Which release branch to backport (provide reason below if selected)
Description for the changelog
Link to config_db schema for YANG module changes
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