Merge PRs from master branch to branch v1.3 - MergePRstoBranchV1.3

[Ashley-wenyizha]

Is this a bug fix or adding new feature?
Merging below PRs from master to branch 1.3

What is this PR about? / Why do we need it?
#585 - Conditionally added AWS_STS_REGIONAL_ENDPOINTS flag
#681 - Removing Dependency on IMDS, allowing hostNetwork: true to be removed
#707 - Support e2e test EFS create on EKS clusters by finding EKS node subnets
#717 Upgrade gopkg.in yaml.v3

What testing is done?

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

@Ashley-wenyizha: The following tests 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-aws-efs-csi-driver-e2e	9ee33bf	link	true	/test pull-aws-efs-csi-driver-e2e
pull-aws-efs-csi-driver-external-test-eks	9ee33bf	link	true	/test pull-aws-efs-csi-driver-external-test-eks

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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