Pass error when failing to get SSM parameter

[hakman]

https://storage.googleapis.com/kubernetes-jenkins/pr-logs/pull/kops/15599/presubmit-kops-aws-scale-amazonvpc-using-cl2/1690212199458410496/build-log.txt

Error: control-plane-ap-northeast-2a-1.spec.image: Invalid value: "ssm:/aws/service/canonical/ubuntu/server/20.04/stable/current/arm64/hvm/ebs-gp2/ami-id":
specified image "ssm:/aws/service/canonical/ubuntu/server/20.04/stable/current/arm64/hvm/ebs-gp2/ami-id" is invalid:
failed to get value for SSM Parameter "/aws/service/canonical/ubuntu/server/20.04/stable/current/arm64/hvm/ebs-gp2/ami-id"

/cc @johngmyers @rifelpet @dims
@prateekgogia

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