docker: Fix docker install on CentOS/RHEL 8

[champtar]

we can't set module_hotfixes=True using yum_repository ansible module
Fixes 38688a4

What type of PR is this?
/kind bug

What this PR does / why we need it:
Be able to install docker on CentOS8

Which issue(s) this PR fixes:
NONE

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

Hi @champtar. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[Miouge1]

I'm not sure what's happening with the ok-to-test labels, let me try this:

/test pull-kubespray-yamllint

[mattymo]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: champtar, mattymo

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