Gilad Peleg 25ef4a156f Improve bluetooth tracker device code (#26067)
* Improve bluetooth device tracker code

* Don't use set operations

* Fix logging template interpolation

* Warn if not tracking new devices and not devices to track

* Updates due to CR

* Fix pylint warning

* Fix pylint import warning

* Merge with dev
2019-09-12 18:01:55 +02:00
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