zacharya: Refactor controller unit test with proper mock

JobBuild
269
04-05 04:53
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pull-aws-ebs-csi-driver-e2e-single-az 1115277156042149888 1114156672491720705 1114154911668375555 1114153150857613313 1114152773806460932 1114028202679865348
pull-aws-ebs-csi-driver-integration 1115347010048757762 1115342228294733824 1115277156037955584 1114166992044036098 1114156672491720704 1114154911668375554 1114153150861807616 1114152773806460930 1114028202679865347
pull-aws-ebs-csi-driver-sanity 1115277156008595456 1114156672500109312 1114154911668375552 1114153150857613315 1114152773806460931 1114028202679865346
pull-aws-ebs-csi-driver-unit 1115277155991818240 1114156672495915014 1114154911668375553 1114153150861807617 1114152773806460929 1114028202679865345
pull-aws-ebs-csi-driver-verify 1115277155983429632 1114156672495915013 1114154911672569858 1114153150857613312 1114152773806460928 1114028202679865344