Print disk usage (#20704)

* Print disk usage
* Try again
* Disk util part3
* dont look at /tmp
* Remove max-depth
* Add disk usage stats to all non-windows platforms
* Disable Ubuntu quarantined test step
* Apply suggestions from code review
  - Make thingies worky on macOS
* Update .azure/pipelines/jobs/default-build.yml
* Undo skip of qurantined test run
* Update .azure/pipelines/jobs/default-build.yml
  - do not reference directory that doesn't exist
* Update .azure/pipelines/jobs/default-build.yml
  - reduce noise in Mac disk utilization output

Co-authored-by: Doug Bunting <6431421+dougbu@users.noreply.github.com>

.azure/pipelines/jobs/default-build.yml

@@ -134,6 +134,9 @@ jobs:
       - ${{ if in(variables['Build.Reason'], 'PullRequest') }}:
         - _SignType: test
     steps:
+    - ${{ if ne(parameters.agentOs, 'Windows') }}:
+      - script: df -h
+        displayName: Disk size
     - checkout: self
       clean: true
     - ${{ if and(eq(parameters.agentOs, 'Windows'), eq(parameters.isTestingJob, true)) }}:
@@ -202,6 +205,13 @@ jobs:
 
     - ${{ parameters.afterBuild }}
 
+    - ${{ if eq(parameters.agentOs, 'Linux') }}:
+      - script: df -h && du -h --threshold=50MB ..
+        displayName: Disk utilization
+    - ${{ if eq(parameters.agentOs, 'macOS') }}:
+      - script: df -h && du -h -d 3 ..
+        displayName: Disk utilization
+
     - ${{ if and(eq(parameters.agentOs, 'Windows'), eq(parameters.isTestingJob, true)) }}:
       - powershell: ./eng/scripts/FinishDumpCollectionForHangingBuilds.ps1 artifacts/dumps/
         displayName: Finish background dump collection