fix(flaky) increase the timeout for setting up the ext_proc conn in integration test

[zetxqx]

What type of PR is this?

/kind test

What this PR does / why we need it:
increase the extprocConnSetupTimeout to make the test less flaky

Which issue(s) this PR fixes:

Fixes error similar to

Does this PR introduce a user-facing change?:

[k8s-ci-robot]

@zetxqx: The label(s) kind/test cannot be applied, because the repository doesn't have them.

Details

In response to this:

What type of PR is this?

/kind test

What this PR does / why we need it:
increase the extprocConnSetupTimeout to make the test less flaky

Which issue(s) this PR fixes:

Fixes error similar to

Does this PR introduce a user-facing change?:

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[ahg-g]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahg-g, zetxqx

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• OWNERS [ahg-g]

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