Add ref: sdn-conf for aws-ipi-sdn2ovn

[weliang1]

The default network plugin is OVN not SDN in v4.12. Update workflow to install SDN and then execute sdn2ovn migration test.

@zhaozhanqi @anuragthehatter @lihongan PTAL!

[zhaozhanqi]

/lgtm

[zhaozhanqi]

/assign @jianlinliu

[jianlinliu]

looks good to me. To avoid conflicts with another WIP big PR - #31256 (pending on dev's final review and approval), can you help remove the change in ci-operator/config/openshift/verification-tests/openshift-verification-tests-master__installer-rehearse-4.12.yaml, after that, we can safely merge this PR.

[weliang1]

Update rehearse-4.12 YAML file

@jianlinliu Change it back now.

[openshift-ci]

@weliang1: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/pj-rehearse	89f2ce3	link	false	/test pj-rehearse
ci/rehearse/periodic-ci-openshift-openshift-tests-private-release-4.12-amd64-nightly-e2e-aws-ipi-ovn-sdn2ovn-p2	89f2ce3	link	unknown	/test pj-rehearse

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[jianlinliu]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jianlinliu, weliang1, zhaozhanqi

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• ci-operator/step-registry/cucushift/installer/rehearse/aws/ipi/ovn/sdn2ovn/provision/OWNERS [jianlinliu,zhaozhanqi]

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