[SPARK-22440][ML] Add Calinski-Harabasz index to ClusteringEvaluator

[mgaido91]

What changes were proposed in this pull request?

sklearn contains two metrics for unsupervised clustering evaluation. One is silhouette, which has been previously added, and the other one is Calinski-Harabasz index.
This PR aims to add Calinski-Harabasz index in order to reach feature parity with sklearn.

How was this patch tested?

added UT

[SparkQA]

Test build #83483 has finished for PR 19668 at commit 633b21d.

• This patch fails Scala style tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #83489 has finished for PR 19668 at commit 3e5e8c5.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[mgaido91]

cc @yanboliang

[SparkQA]

Test build #83683 has finished for PR 19668 at commit c2fa615.

• This patch fails to build.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #83684 has finished for PR 19668 at commit 05c77b2.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[mgaido91]

I am closing this as it seems that nobody has interest in it. If it will be considered useful I can reopen it later. Thanks.