stream-data for azure contains 'None' in item_name

[Scott Moser]

For published azure data, many (not all) of the item_names begin with 'None'.

In stream data format, that is
products:
 <product_name>
  versions:
   <version_name>
     items:
      <item_name>

Just search for None in your web browser at
  http://cloud-images.ubuntu.com/daily/streams/v1/com.ubuntu.cloud:daily:azure.sjson

You can see the bad entries like this with sstream-query:
$ azure_url=http://cloud-images.ubuntu.com/daily/streams/v1/com.ubuntu.cloud:daily:azure.sjson
$ keyring=--keyring=/usr/share/keyrings/ubuntu-cloudimage-keyring.gpg
$ sstream-query $keyring --max=1 --json $azure_url item_name~None | pastebinit
http://paste.ubuntu.com/26485522/

...
  {
    "arch": "amd64",
    "content_id": "com.ubuntu.cloud:daily:azure",
    "crsn": "UK West",
    "datatype": "image-ids",
    "endpoint": "https://management.core.windows.net/",
    "format": "products:1.0",
    "id": "b39f27a8b8c64d52b05eac6a62ebad85__Ubuntu_DAILY_BUILD-trusty-14_04_5-LTS-amd64-server-20180125-en-us-30GB",
    "item_name": "Noneww1i3",
    "label": "daily",
    "product_name": "com.ubuntu.cloud.daily:server:14.04:amd64",
    "publabel": "Ubuntu Server 14.04.5-LTS DAILY",
    "pubname": "ubuntu-trusty-daily-amd64-server-20180125",
    "region": "UK West",
    "release": "trusty",
    "root_size": "30GB",
    "updated": "Fri, 26 Jan 2018 14:36:42 +0000",
    "version": "14.04",
    "version_name": "20180125",
    "virt": "Hyper-V"
  }

[Joshua Powers (powersj)]

Scott, marking this as a duplicate of bug 1602843 and I have a fix in flight.