Fix hardcoded CIDR in the validation_test

[bowei]

The ideal fix is to not hardcode these values.

fixes #47479

none

[dnardo]

I actually had a fix for this and was just waiting for the e2e tests to finish, but it looks like you beat me to it.

/lgtm

[dnardo]

I think this fixes #47379
not pr/47379 - link goes to the pr

[cmluciano]

/lgtm

/retest

flaky test failure

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: bowei, cmluciano, dnardo
We suggest the following additional approver: erictune

Assign the PR to them by writing /assign @erictune in a comment when ready.

Associated issue: 47479

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Needs approval from an approver in each of these OWNERS Files:

• pkg/api/OWNERS
• test/e2e_node/OWNERS [bowei]

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[cmluciano]

@bowei @dnardo This should be merged into 1.7 right?

[dnardo]

@cmluciano yes

[cmluciano]

@lavalamp @erictune @smarterclayton Can we get an approval from the pkg/api side?

[bowei]

@dchen1107 @kubernetes/kubernetes-release-managers needs approval

[dchen1107]

I believe this is for fixing #47379, not #47479

[dchen1107]

I am going to manually merging this one to get better data for upgrade tests. Currently the upgrade test is failed due this issue.

cc/ @kubernetes/kubernetes-release-managers @pwittrock @monopole