[Monitoring LS] Recommend collecting metricsets which are combined in dashboards.

[mashhurs]

Tell us about the issue

Description:

In the LS integration, users are able to enable/disable the metricsets to collect. If some of them are disabled and some of them are enabled, this may lead some dashboards to partially display metrics. It is a good idea to point out this caveat on the documentation with one line sentence.
Example, if plugins is disabled and node is enabled, Single pipeline view dashboard may not show plugins section.

Similarly, in metricbeat based monitoring, node or node_stats metricsets can be turned off manually but that would lead data miss on dashboard.

URL:

• https://www.elastic.co/guide/en/logstash/current/monitoring-with-ea.html
• https://www.elastic.co/guide/en/logstash/current/monitoring-with-metricbeat.html

Anything else?