Chao 3deeac6bf7 fix issue setting scan_interval (#26165) ...

I was getting the following error when i set the scan_interval
```
    self.scan_interval = timedelta(seconds=config.get(CONF_SCAN_INTERVAL, 60))
TypeError: unsupported type for timedelta seconds component: datetime.timedelta
```
it turns out `config.get(CONF_SCAN_INTERVAL)` already returns `timedelta`

```('scan_interval', datetime.timedelta(seconds=180))```

2019-08-23 10:14:18 -07:00

..

__init__.py

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device_tracker.py

fix issue setting scan_interval (#26165)

2019-08-23 10:14:18 -07:00

manifest.json

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