VSD - Add Service Ping instrumentation for each metric drill-down link

As a follow-up to this discussion:

Proposal

1. Add Service Ping instrumentation to measure drill-down clicks for each VSD metric.
2. Time frame: monthly
3. name: metrics_comparison_clicks_monthly
4. Count unique users clicking.
5. Count total users clicking.
6. The VSD metrics list can be found here.

Success Criteria

Identify which metric drill-downs users find useful and return frequently, by adding this table to Sisense:

Deployment Frequency	unique users clicking	total users clicking
Host_name_1
Host_name_2
Host_name_3
Host_name_4
Host_name_5