Glance CLI does not allow to pass virtual_size param

python-glanceclient validates "virtual_size" param from CLI in a wrong way. It doesn't try to cast it to int and thinks that is's a string:

e0ne@dsvm1:~/devstack$ glance image-create --name fake-3g-data --disk-format qcow2 --container-format bare --property
virtual_size=33333 < test-qcow500.imgUnable to set 'virtual_size' to '33333'. Reason: u'33333' is not of type u'null', u'integer'
Unable to set 'virtual_size' to '33333'. Reason: u'33333' is not of type u'null', u'integer'

Failed validating u'type' in schema[u'properties'][u'virtual_size']:
    {u'description': u'Virtual size of image in bytes',
     u'readOnly': True,
     u'type': [u'null', u'integer']}

On instance[u'virtual_size']:
    u'33333'

The same issue occurs using OpenStack Client:
e0ne@dsvm1:~/devstack$ openstack image create --disk-format qcow2 --container-format bare --property virtual_size=33333 < test-qcow500.img fake-3g-dataUnable to set 'virtual_size' to '33333'. Reason: '33333' is not of type u'null', u'integer'

Failed validating u'type' in schema[u'properties'][u'virtual_size']:
    {u'description': u'Virtual size of image in bytes',
     u'readOnly': True,
     u'type': [u'null', u'integer']}

On instance[u'virtual_size']:
    '33333'