Add daemonset to prow cluster to increase inotify watch limit

[Katharine]

This should reduce the incidence of failing tests. See kubernetes-sigs/kind#717.

[istio-testing]

Hi @Katharine. Thanks for your PR.

I'm waiting for a istio 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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[howardjohn]

/ok-to-test

[istio-testing]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: howardjohn, Katharine
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[geeknoid]

@fejta @cjwagner @clarketm Should we merge this?

[clarketm]

This change was already applied to the kubernetes build cluster and original istio cluster (and will need to be propagated to new istio build cluster). For the reasons mentioned in kubernetes-sigs/kind#717 it makes sense to version control and add to deployment.