Set CSIMigrationAWSComplete for migration tests

[wongma7]

Is this a bug fix or adding new feature? fix

What is this PR about? / Why do we need it? IDK if checking metrics' plugin_name #560 (comment) is a valid way of testing whether migration is working or not, better to set CSIMigrationAWSComplete to turn off the in-tree plugin entirely.

What testing is done? N/A, the migration suite is currently failing

[coveralls]

Pull Request Test Coverage Report for Build 1271

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 81.253%

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Totals
Change from base Build 1269:	0.0%
Covered Lines:	1595
Relevant Lines:	1963

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💛 - Coveralls

[wongma7]

Since translation happens before the volume is added to desired state of world and so before any operations are done on it, https://github.com/kubernetes/kubernetes/blob/e23d83eead3b5ae57731afb0209f4a2aaa4009dd/pkg/kubelet/volumemanager/populator/desired_state_of_world_populator.go#L583 I would expect that if migration is enabled the metrics should have plugin_name ebs.csi.aws.com NOT kubernetes.io/aws-ebs ...

[wongma7]

/test pull-aws-ebs-csi-driver-e2e-single-az

[wongma7]

io2 flake

[leakingtapan]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: leakingtapan, wongma7

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[wongma7]

io2 again, i am checking if the account has some kind of volume type specific limit ???

/retest

[wongma7]

/retest

[wongma7]

/test pull-aws-ebs-csi-driver-e2e-single-az