Description of problem:
When trying to open the "Edit Parameters" screen, you see the following in the tripleo-api console:

[-] Error validating the plan.
Traceback (most recent call last):
  File "/home/stack/tripleo-common/tripleo_common/core/plan.py", line 154, in get_deployment_parameters
    show_nested=True)
  File "/home/stack/tripleo-common/.tox/venv/lib/python2.7/site-packages/heatclient/v1/stacks.py", line 296, in validate
    resp = self.client.post(url, **args)
  File "/home/stack/tripleo-common/.tox/venv/lib/python2.7/site-packages/heatclient/common/http.py", line 281, in post
    return self.client_request("POST", url, **kwargs)
  File "/home/stack/tripleo-common/.tox/venv/lib/python2.7/site-packages/heatclient/common/http.py", line 271, in client_request
    resp, body = self.json_request(method, url, **kwargs)
  File "/home/stack/tripleo-common/.tox/venv/lib/python2.7/site-packages/heatclient/common/http.py", line 260, in json_request
    resp = self._http_request(url, method, **kwargs)
  File "/home/stack/tripleo-common/.tox/venv/lib/python2.7/site-packages/heatclient/common/http.py", line 215, in _http_request
    raise exc.from_response(resp)
HTTPBadRequest: ERROR: Property error: resources.StorageMgmtVirtualIP.properties: Unknown Property PortName

2016-03-14 08:47:20.008 29584 INFO werkzeug [-] 192.0.2.1 - - [14/Mar/2016 08:47:20] "GET /v1/plans/DefaultPlan/parameters HTTP/1.1" 500 -


How reproducible:
100%


Steps to Reproduce:
1. Go to the "Deployment Plan" page
2. Under "Configure and Assign Roles" click on "Edit Parameters"


Actual results:
Nothing pops up on the screen. Check the tripleo-api console for the exception.