Deflake TestWatchBasedManager

[liggitt]

What type of PR is this?
/kind flake
/area deflake

What this PR does / why we need it:
Follow up to #80465

The TestWatchBasedManager integration test was using the loopback server client config as a starting point, and increasing QPS. Now that the loopback does not set QPS or Burst, the integration test needs to override both.

Does this PR introduce a user-facing change?:

NONE

/cc @lavalamp
/sig api-machinery

[lavalamp]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lavalamp, liggitt

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[liggitt]

/priority important-soon

[k8s-ci-robot]

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

Test name	Commit	Details	Rerun command
pull-kubernetes-conformance-kind-ipv6	c7932e1	link	/test pull-kubernetes-conformance-kind-ipv6

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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[wojtek-t]

Thanks Jordan.

lgtm