fix random index name clean (#1111)
fix random index name clean (#1111)

When using `fixture-ctia-with-app` we generate random indices to avoid collision between tests. 
We always had trailing indices in our local clusters since, I thought that it was due to failing tests, but indeed the cleaning was not triggered at all.
threatgrid/ctia,yogsototh/ctia,saintx/ctia,yogsototh/ctia,saintx/ctia,yogsototh/ctia,threatgrid/ctia,threatgrid/ctia,threatgrid/ctia,saintx/ctia