## What changes were proposed in this pull request?

The PR adds the `distanceMeasure` param to ClusteringEvaluator in the Python API. This allows the user to specify `cosine` as distance measure in addition to the default `squaredEuclidean`.

## How was this patch tested?

added UT

Author: Marco Gaido <marcogaido91@gmail.com>

Closes #20627 from mgaido91/SPARK-23217_python.