Add support to set/update scenario name from data/table - driven tests

[johanpearson]

Example test spec:

My Tests

Link	Page
Link1	Page1
Link2	Page2
Link3	Page3

• Start Application

Click Link re-directs to correct page

• Verify Click "Link" re-directs to "Page"

This results in the following TestNames:
My Tests / Click Link re-directs to correct page 1
My Tests / Click Link re-directs to correct page 2
My Tests / Click Link re-directs to correct page 3

It would be very helpful if it was possible to override the index with some kind of description or name to get better testnames.
Example:

Link	Page	Desc
Link1	Page1	with Link 1
Link2	Page2	with Link 2
Link3	Page3	with Link 3

This would result with the following TestNames:
My Tests / Click Link re-directs to correct page with Link 1
My Tests / Click Link re-directs to correct page with Link 2
My Tests / Click Link re-directs to correct page with Link 3