Add custom scoring metrics for clustering models

[June]

Regression models in the Lab allow the user to define custom scoring metrics for their models.  It does not appear that the clustering models in the lab allow this.  

It would be great if they did. 

[stochastic]

+1

[stochastic]

+1

[MaximeA]

Thanks for the feedback @June 

We have logged it internally and will let you know if we have any updates.

[MaximeA]

Thanks for the feedback @June 

We have logged it internally and will let you know if we have any updates.