Increase threshold for failure in collector integration test

[pwittrock]

No description provided.

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[k8s-ci-robot]

@pwittrock: This issue is currently awaiting triage.

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[k8s-ci-robot]

@pwittrock: The following test 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-usage-metrics-collector-build	7a40d2b	link	true	/test pull-usage-metrics-collector-build

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.

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[ehashman]

Let me see if I can get the test grid harness to break out results on a per test basis as well as add periodics before I merge this so we can actually verify that this fixed the flake.