Description of problem:
Skyscape hosted RHEL OSP8 provider refresh failing with:
Policy doesn't allow os_compute_api:os-availability-zone:detail to be performed.

Version-Release number of selected component (if applicable):
cfme-5.6.0.13
RHEL OSP 8

How reproducible:

Steps to Reproduce:
1. Add provider
2. Refresh
3.

Actual results:
Refresh fails as above.


Expected results:
Refresh successfully.


Additional info:

Provider refresh successful with cfme-5.5.4.2 but fails with latest. Full error below:

[----] E, [2016-07-05T05:15:22.112534 #11801:10f7994] ERROR -- : excon.error     #<Excon::Errors::Forbidden: Expected(200) <=> Actual(403 Forbidden)
excon.error.response
  :body          => "{\"forbidden\": {\"message\": \"Policy doesn't allow os_compute_api:os-availability-zone:detail to be performed.\", \"code\": 403}}"
  :cookies       => [
  ]
  :headers       => {
    "Content-Length"               => "123"
    "Content-Type"                 => "application/json; charset=UTF-8"
    "Date"                         => "Tue, 05 Jul 2016 09:15:22 GMT"
    "Vary"                         => "X-OpenStack-Nova-API-Version"
    "X-Compute-Request-Id"         => "req-b2706cf3-2626-43a8-82a7-8c6b09999541"
    "X-Openstack-Nova-Api-Version" => "2.1"
  }
  :host          => "beta.openstack.skyscapecloud.com"
  :local_address => "192.168.25.132"
  :local_port    => 49476
  :path          => "/v2.1/988f47cb5a634632baca8760b606e5b1/os-availability-zone/detail.json"
  :port          => 13774
  :reason_phrase => "Forbidden"
  :remote_ip     => "51.179.196.242"
  :status        => 403
  :status_line   => "HTTP/1.1 403 Forbidden\r\n"
>