Remove .cache directory with make clean.

[szombi]

What this PR does / why we need it:

Delete .cache directory with make clean command. After a failed e2e test run the next one can fail with a permission denied error because something can't write a directory under .cache.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Which issue/s this PR fixes

How Has This Been Tested?

Run make kind-e2e-test, check the .cache directory existing and run make clean`. It should delete the .cache directory.

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added tests to cover my changes.
• All new and existing tests passed.

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @szombi. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[aledbf]

@szombi please sign the CLA

[aledbf]

/ok-to-test

[aledbf]

/lgtm
/approve

[aledbf]

@szombi thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, szombi

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[aledbf]

/retest

[aledbf]

/retest