Added CSI provisioner check to func isEBSVolume

[kristianfzr]

Please review the change and make any needed adjustments. :))

[sergiorua]

The syntax is not right. This is what you need. Amend the PR request if you'd like or let me know and I can fix it myself now I know what the annotation is called.

func isEBSVolume(volume *v1.PersistentVolumeClaim) bool {
	for k, v := range volume.Annotations {
		if k == "volume.beta.kubernetes.io/storage-provisioner" && (v == "kubernetes.io/aws-ebs" || v == "kubernetes.io/ebs.csi.aws.com") {
			return true
		}
	}
	return false
}

[kristianfzr]

@sergiorua Thanks! I did another commit with the correct syntax.