Merged in NRRPLT-8412-virtual-coach-models (pull request #37)

NRRPLT-8412-virtual-coach-models

* [NRRPLT-8412] Print, delete and import models Virtual Coach functions + tests

* [NRRPLT-8412] Fix pylint errors

* [NRRPLT-8412] remove redundant keyword arg

* [NRRPLT-8412] fix error unclosed file

* [NRRPLT-8412] fix error unclosed file in import model

* [NRRPLT-8412] fix type variable and condition

* [NRRPLT-8412] Fix failing tests and pycodestyle

Change-Id: Id7b95518ed4270468c798a76ae47e8cf740626e2


Approved-by: Eloy Retamino
Approved-by: Vahid Zolfaghari