chore, refactor (egen): edits get_started_with_pytorch_rov notebook (#3376)

* chore, refactor: edits made according to the template

* chore: lint run

* fix: remove ray version

* fix: made dataset url to http to deal with job failure error

* chore: lint run

* chore: fixes markdown as per guide

* chore: lint

* chore, fix: adds testing code and also fix the error

* chore, fix: clear outputs adds retries and adds http dataset path in testing

* chore:  review comment addressed

* chore: lint run

* refactor: removes IS_TESTING flag

* chore, fix: Removes IS_TESTING, fixes packages installations, runs end to end

* chore: lint run

Author: k-root