* Fix Calix OS definitions
The main change is EXA (E7, etc) and B6 (Occam) devices are now their own OS
Now the follow OS exist:
exa: E7 EXA, E5-400, E5-48, E3-48, E3-8G
occamos: B6
Unchanged:
calix: E5-1**, E3-12C
axos: E7-2 AXOS, E9-2, E3-2, E5-520, E5-16F, E3-16F, E5-30x
* fix tests
exa_e7-2 seems like bogus data.
* additional tests, fix an error in the yaml
* Remove extra line return
* Add missed file
