In tests, retry deletion of temporary home if it fails
In tests, retry deletion of temporary home if it fails

On Windows, we sometimes see this test flake:
```
ERR: Unexpected error: remove C:\Windows\TEMP\cli-integration-test809800435\.cf\temp-config242053063: The process cannot access the file because it is being used by another process.
```
When this happens we should re-try because we probably can delete the
file an instant later.

[#169628834]

Co-authored-by: Felisia Martini <edd56b3c9fef45de9b237978feb829e8e3cc3cde@pivotal.io>

cloudfoundry/cli,cloudfoundry/cli,cloudfoundry/cli