[Issue] Tests are running in a one thread when pass files as array of arrays

[EugenePetrik]

Tool:

• WDIO + Cucumber

Config:
specs: [['tests/**/*.feature']]

If we pass the feature files as an array of arrays, this causes entire scripts to run on a single thread.

If we pass specs: ['tests/**/*.feature'] it runs scenarios in multiply threads, however, it creates a new lunch for each feature file in the ReportPortal.

Expected result:
It would be nice to add just specs: ['tests/**/*.feature'] and run scenarios in a parallel.