Fix periodic e2e test for Ubuntu 16.04

[hakman]

Periodic tests for Ubuntu 16.04 (Xenial) are broken because of missing Docker packages:
#7878 (comment)

This fix adds Xenial packages for both 19.03.4 and 18.09.9.

[k8s-ci-robot]

Hi @hakman. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[rifelpet]

/ok-to-test

[rifelpet]

Thanks for getting that added! Hopefully the periodic e2e job starts passing
/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hakman, rifelpet

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[hakman]

Np. We will see in a few hours.

[k8s-ci-robot]

@hakman: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-kops-e2e-kubernetes-aws	97f70ff	link	/test pull-kops-e2e-kubernetes-aws

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/test-infra repository. I understand the commands that are listed here.