Issue on history cleaner

[RaiBnod]

History cleaner does the history clean and only stores the data of certain hours. Let's say:

• it has to store data for 1 day and
• the device has been offline for 2 days

Now, when the program loads up all the history data gets deleted. And it starts creating the history records again from index 1. But at other ends, the history sync services Postgres, and InfluxDB they have a marker (history_sync_logs table) of the last time data was synced. As the result, it doesn't sync the value till history reaches up to that marker.

The solution is, when the cleaner does the clean job, add additional where conditions for don't delete the last record at any cost.