Proposed title of this feature request

Adding mountstats collector in Node exporter

What is the nature and description of the request?

Need the mountstats collector to be added to Node exporter to generate node_mountstats_* counters.

Why does the customer need this? (List the business requirements)

Customer using this data to show pod and container related mountstats data of running services on a Grafana-based GUI for which Customer have created dashboards.

List any affected packages or components.

node-exporter, CMO config