stream data for gce (google compute) contains incomplete or unavailble image ids

image-status is
  https://github.com/smoser/talk-simplestreams/blob/master/bin/image-status

  $ project="smoser-00"
  $ rel=xenial
  $ name="smfoo-$rel"
  $ zone="us-east1-b"
  $ mtype="f1-micro"
  $ image-status gce xenial region=${zone%-*}
  xenial 20170414a us-east1 daily-ubuntu-1604-xenial-v20170414a

  ## My notes have this '/ubuntu-os-cloud/' prefix, that i'm not sure
  ## where it came from, and seems like it should be present in stream data.
  ## it fails both with and without it.
  $ img="/ubuntu-os-cloud/daily-ubuntu-1604-xenial-v20170414a"
  $ gcloud compute "--project=$project" instances create "$name" \
  "--zone=$zone" "--machine-type=$mtype" --network=default \
  "--maintenance-policy=MIGRATE" \
   --image="$img" \
   --boot-disk-size=10 --boot-disk-type=pd-standard \
   "--boot-disk-device-name=$name"

   WARNING: You have selected a disk size of under [200GB]. This may result in poor I/O performance. For more information, see: https://developers.google.com/compute/docs/disks#pdperformance.
   ERROR: (gcloud.compute.instances.create) Some requests did not succeed:
    - Invalid value for field 'resource.disks[0].initializeParams.sourceImage': 'https://www.googleapis.com/compute/v1/projects/ubuntu-os-cloud/global/images/daily-ubuntu-1604-xenial-v20170414a'. The referenced image resource cannot be found.

Modifying the above to use 'gce-release' will get you something like:
 $ image-status gce-release xenial region=us-east1
 xenial 20170330 us-east1 ubuntu-1604-xenial-v20170330

And then attempting to launch with an image like '/ubuntu-os-cloud/ubuntu-1604-xenial-v20170330' will actually work, but I don't know why the user would be expected to know the magic string 'ubuntu-os-cloud'.

So the 2 things wrong:
 a.) I'm not aware of any way to launch an image in the daily stream
 b.) you have to prefix image-ids with '/ubuntu-os-cloud/' to launch one
     from the release stream.