Description of problem:

Receive the below error message when updating the quota on an OpenStack 8 project from CloudForms.

Files: 

- fog-openstack/lib/fog/compute/openstack/requests/update_quote.rb
- fog-openstack/lib/fog/compute/openstack/requests/update_quote.rb

~~~
excon.error.response
  :body          => "{\"badRequest\": {\"message\": \"Invalid input for field/attribute quota_set. Value: {u'cores': u'20', u'ram': 32768, u'tenant_id': u'aafe8
e117a00488d9bc866993bc67f7e'}. Additional properties are not allowed (u'tenant_id' was unexpected)\", \"code\": 400}}"
  :cookies       => [
  ]
  :headers       => {
    "Content-Length"               => "248"
    "Content-Type"                 => "application/json; charset=UTF-8"
    "Date"                         => "Mon, 24 Oct 2016 19:38:10 GMT"
    "Vary"                         => "X-OpenStack-Nova-API-Version"
    "X-Compute-Request-Id"         => "req-5f28f24f-81ab-4aed-b3c2-a2625ae3923b"
    "X-Openstack-Nova-Api-Version" => "2.1"
  }
  :host          => "xxxxxxxxxxxxx"
  :local_address => "xxxxxxxxxxxxxx"
  :local_port    => 51330
  :path          => "/v2.1/3e188ee29c944bbaa43937dacab477ac//os-quota-sets/aafe8e117a00488d9bc866993bc67f7e"
  :port          => 13774
  :reason_phrase => ""
  :remote_ip     => "xxxxxxxxxxxxxxx"
  :status        => 400
  :status_line   => "HTTP/1.1 400 \r\n"
]
/opt/rh/cfme-gemset/gems/excon-0.54.0/lib/excon/middlewares/expects.rb:7:in `response_call'
/opt/rh/cfme-gemset/gems/excon-0.54.0/lib/excon/middlewares/response_parser.rb:9:in `response_call'
/opt/rh/cfme-gemset/gems/excon-0.54.0/lib/excon/connection.rb:388:in `response'
/opt/rh/cfme-gemset/gems/excon-0.54.0/lib/excon/connection.rb:252:in `request'
/opt/rh/cfme-gemset/gems/fog-core-1.43.0/lib/fog/core/connection.rb:81:in `request'
/opt/rh/cfme-gemset/gems/fog-openstack-0.1.11/lib/fog/openstack/core.rb:81:in `request'
/opt/rh/cfme-gemset/gems/fog-openstack-0.1.11/lib/fog/compute/openstack/requests/update_quota.rb:7:in `update_quota'
<code: nova.update_quota(project.id, { 'cores' => quota_vcpu,>:228:in `<main>'
~~~

Version-Release number of selected component (if applicable):

5.6.2.2.20161017185613_7cee0a0


How reproducible:



Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

This occurs for Red Hat OpenStack 8. The customer simply comments out the line

~~~
options['tenant_id'] = tenant_id
~~~

to get around the issue.