image id is checked after uploading image

version: mitaka

When uploading an image, the ID is checked after the image is uploaded.
This is not much of an issue for small images like cirros but for larger images like rhel, it takes up lot of network.

Ideally, the ID of the image should be checked before the upload takes place.

Log below:--

glance --debug image-upload --file ubuntu-14.04-desktop-amd64.iso --progress 4a525188-2e6f-4e49-88cd-311ca215535y
[=============================>] 100%
Request returned failure status 404.
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/glanceclient/shell.py", line 595, in main
    args.func(client, args)
  File "/usr/lib/python2.7/site-packages/glanceclient/v2/shell.py", line 322, in do_image_upload
    gc.images.upload(args.id, image_data, args.size)
  File "/usr/lib/python2.7/site-packages/glanceclient/v2/images.py", line 217, in upload
    self.http_client.put(url, headers=hdrs, data=body)
  File "/usr/lib/python2.7/site-packages/keystoneclient/adapter.py", line 185, in put
    return self.request(url, 'PUT', **kwargs)
  File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 332, in request
    return self._handle_response(resp)
  File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 83, in _handle_response
    raise exc.from_response(resp, resp.content)
HTTPNotFound: 404 Not Found: No image found with ID 4a525188-2e6f-4e49-88cd-311ca215535y (HTTP 404)
404 Not Found: No image found with ID 4a525188-2e6f-4e49-88cd-311ca215535y (HTTP 404)