Packages feature (#1052)

* Started to work on packages feature

* Added some more validation to packages config

* Fixed some linter warnings

* Updated tests

* Reordered consts to avoid linter error

* Reordered consts to avoid linter error

* Refactored test yaml files to integrate into existing test pipeline

Co-authored-by: Dmitry Berezovsky <dmitry.berezovsky@logicify.com>

setup.py

@@ -33,6 +33,7 @@ REQUIRES = [
     'pytz==2020.1',
     'pyserial==3.4',
     'ifaddr==0.1.6',
+    'deepmerge==0.1.0'
 ]
 
 # If you have problems importing platformio and esptool as modules you can set