* [Juicenet] Fix typos in setOverride()
Some obvious typos in setOverride() result in the timestamp being
ignored which causes it to fail
Fixes#15564
* [Juicenet] Allow disabling the override
- The charger has default settings upon plugin, changing the current state
sets the overide to Y, this makes override settable only in the N direction
to remove whatever settings were previously applied
* [Juicenet] Document new writable status of override
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Signed-off-by: Ed Martin <edman007@edman007.com>