Use correct values for CALICO_IPV4POOL_IPIP in Calico v3

[zacblazic]

Updates the Calico v3 manifests to use more correct values for the CALICO_IPV4POOL_IPIP environment variable, which appear to have changed since v3.0.0.

Previous values are still backwards-compatible currently.

[k8s-ci-robot]

Hi @zacblazic. Thanks for your PR.

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[rifelpet]

/ok-to-test

[granular-ryanbonham]

/lgtm

[justinsb]

Thanks - a great thing to get into 1.17, and I don't think we need to backport as it is backwards compatible.

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: justinsb, zacblazic

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