THEEDGE-4109: Explictly disable IPv4 in anaconda for IPv6 single stack scenarios

[ggiguash]

Besides the importance of "clean" testing environment, this is necessary to avoid ~2m delays when booting IPv6 VMs. See the THEEDGE-4109 for details.

[openshift-ci-robot]

@ggiguash: This pull request references THEEDGE-4109 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Besides the importance of "clean" testing environment, this is necessary to avoid ~2m delays when booting IPv6 VMs. See the THEEDGE-4109 for details.

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[ggiguash]

/test e2e-aws-tests-bootc-periodic

[ggiguash]

/assign @pacevedom

[pmtk]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ggiguash, pmtk

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[openshift-ci]

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