kube-router: bump version v2.1.1 -> v2.5.0

[aauren]

FYI @hakman

A long overdue bump to kube-router's image on kops. This comes with a bunch of bug fixes as well as a newer iptables userspace.

I've tested a deployment of this against a new kops cluster and haven't noticed any regressions.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign olemarkus for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[k8s-ci-robot]

@aauren: 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
pull-kops-e2e-aws-upgrade-k130-ko130-to-klatest-kolatest-many-addons	17c115a	link	false	/test pull-kops-e2e-aws-upgrade-k130-ko130-to-klatest-kolatest-many-addons
pull-kops-e2e-cni-kuberouter	17c115a	link	false	/test pull-kops-e2e-cni-kuberouter

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[hakman]

Awesome, thanks @aauren! 🙂
Any thoughts about the failing test, I think it's a new one introduced in K8s 1.3x?