[RFR] add use of rest parameters in combineDataProviders

[karpushchenko]

Closes #9675 The current implementation doesn't work with dataProvider methods with more than 2 parameters. According to documentation, the method parameter format is not strictly typed, so it is possible to add as many params as needed and then guess why combineDataProviders doesn't work

[fzaninotto]

Thanks. Could you please add unit tests?

[karpushchenko]

Thanks. Could you please add unit tests?

Yep, why not, I will update it probably tomorrow

[karpushchenko]

@fzaninotto updated with a corresponding test

[karpushchenko]

Ok, I will update it later today, not just a simple retarget of PR ( I considered it as a bugfix )

[karpushchenko]

@fzaninotto, done! Sorry for the delay

[fzaninotto]

Thanks!