[CI] tear down the workspace (#885) backport for 7.12.x

[v1v]

Backports the following commits to 7.12.x:

• [CI] tear down the workspace ([CI] tear down the workspace #885)

[elasticmachine]

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• Build Cause: Pull request #892 opened

• Start Time: 2021-03-15T13:03:35.593+0000

• Duration: 24 min 7 sec

• Commit: 755ad41

Test stats 🧪

Test	Results
Failed	0
Passed	109
Skipped	0
Total	109

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Test stats 🧪

Test	Results
Failed	0
Passed	109
Skipped	0
Total	109