[Infra UI] Add Disk Space Usage by Mount Point to Hosts Fly Out (#165852

)

Closes #164209 
## Summary

This PR adds Disk Space Usage by Mount Point chart to host flyout

## Testing
Go to hosts view and open the host flyout
The Disk Space Usage by Mount Point chart should be visible:

<img width="1867" alt="image"
src="https://github.com/elastic/kibana/assets/14139027/113792be-07ee-4609-b1a2-e0527cd5b935">

x-pack/plugins/infra/public/common/visualizations/lens/dashboards/asset_details/host/host_metric_charts.ts

@@ -22,6 +22,7 @@ export const hostMetricFlyoutCharts: XYConfig[] = [
   normalizedLoad1m,
   logRate,
   diskSpaceUsageAvailable,
+  diskSpaceUsageByMountPoint,
   diskThroughputReadWrite,
   diskIOReadWrite,
   rxTx,

x-pack/test/functional/apps/infra/hosts_view.ts

@@ -305,9 +305,9 @@ export default ({ getPageObjects, getService }: FtrProviderContext) => {
             });
           });
 
-          it('should render 8 charts in the Metrics section', async () => {
+          it('should render 9 charts in the Metrics section', async () => {
             const hosts = await pageObjects.assetDetails.getAssetDetailsMetricsCharts();
-            expect(hosts.length).to.equal(8);
+            expect(hosts.length).to.equal(9);
           });
 
           it('should show alerts', async () => {