Defer additionalnetworks configuration

[weliang1]

Test case randomly failed as mentioned in https://redhat-internal.slack.com/archives/GLDDW02SJ/p1723794433778909

Add cleanup steps to delete addintionalnetworks configuration in CNO.

@openshift/team-sdn-qe PTAL

Test log: https://mastern-jenkins-csb-openshift-qe.apps.ocp-c1.prod.psi.redhat.com/job/Runner-v3-smoke/7645/console

[asood-rh]

/lgtm

@weliang1 I am assuming this would be test causing issue in both jobs.

[openshift-ci[bot]]

@weliang1: all tests passed!

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[jechen0648]

/lgtm

[zhaozhanqi]

/approve

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: asood-rh, jechen0648, zhaozhanqi

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