Change default probe timeout to 3 seconds

[sathieu]

What type of PR is this?

/kind feature

What this PR does / why we need it:

The default probe timeout looks to low, and is increased in a lot of places as shown here and here. azure-lustre up to 120s!

I proposed to increase it in vsphere-csi-driver.

A better approach is to change the default, i.e. this PR

Which issue(s) this PR fixes:

Fixes #293

Special notes for your reviewer:

Is this a breaking change?

Does this PR introduce a user-facing change?:

Change default probe timeout from 1 to 3 seconds

[k8s-ci-robot]

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This pull-request has been approved by: sathieu
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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @sathieu. Thanks for your PR.

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