Add Cloud Foundry dashboards for metricbeat (elastic#21124)

Adapt and include dashboards provided by Stephen Brown.

Co-Authored-By: Stephen Brown <stephen.brown@elastic.co>
(cherry picked from commit 82a670c)

CHANGELOG.next.asciidoc

@@ -782,6 +782,7 @@ field. You can revert this change by configuring tags for the module and omittin
 - Release all kubernetes `state` metricsets as GA {pull}20901[20901]
 - Move `compute_vm_scaleset` to light metricset. {pull}21038[21038] {issue}20985[20985]
 - Sanitize `event.host`. {pull}21022[21022]
+- Add overview and platform health dashboards to Cloud Foundry module. {pull}21124[21124]
 
 *Packetbeat*
 

metricbeat/docs/modules/cloudfoundry.asciidoc

@@ -17,6 +17,22 @@ The cloudfoundry module metrics are numerical values that describe some aspect o
 
 The cloudfoundry module mericsets are `container`, `counter` and `value`.
 
+[float]
+=== Dashboards
+
+The Cloud Foundry module includes some dashboards.
+
+The overview dashboard can be used to visualize the current status of your Cloud
+Foundry deployments.
+
+image::./images/metricbeat-cloudfoundry-overview.png[]
+
+The platform health dashboard includes visualizations that help diagnosting
+issues related to the applications deployed in Cloud Foundry.
+
+image::./images/metricbeat-cloudfoundry-platform-health.png[]
+
+
 [float]
 === Module-specific configuration notes
 

metricbeat/docs/modules_list.asciidoc

@@ -60,7 +60,7 @@ This file is generated! See scripts/mage/docs_collector.go
 |<<metricbeat-metricset-ceph-osd_df,osd_df>>   
 |<<metricbeat-metricset-ceph-osd_tree,osd_tree>>   
 |<<metricbeat-metricset-ceph-pool_disk,pool_disk>>   
-|<<metricbeat-module-cloudfoundry,Cloudfoundry>>  beta[]   |image:./images/icon-no.png[No prebuilt dashboards]    |  
+|<<metricbeat-module-cloudfoundry,Cloudfoundry>>  beta[]   |image:./images/icon-yes.png[Prebuilt dashboards are available]    |  
 .3+| .3+|  |<<metricbeat-metricset-cloudfoundry-container,container>> beta[]  
 |<<metricbeat-metricset-cloudfoundry-counter,counter>> beta[]  
 |<<metricbeat-metricset-cloudfoundry-value,value>> beta[]  

x-pack/metricbeat/module/cloudfoundry/_meta/docs.asciidoc

@@ -7,6 +7,22 @@ The cloudfoundry module metrics are numerical values that describe some aspect o
 
 The cloudfoundry module mericsets are `container`, `counter` and `value`.
 
+[float]
+=== Dashboards
+
+The Cloud Foundry module includes some dashboards.
+
+The overview dashboard can be used to visualize the current status of your Cloud
+Foundry deployments.
+
+image::./images/metricbeat-cloudfoundry-overview.png[]
+
+The platform health dashboard includes visualizations that help diagnosting
+issues related to the applications deployed in Cloud Foundry.
+
+image::./images/metricbeat-cloudfoundry-platform-health.png[]
+
+
 [float]
 === Module-specific configuration notes