When the Cisco nexus plugin is configured on DevStack, the tempest
Neutron API test test_port_list_filter_by_router_id fails with the
following error:
ParseError: no element found: line 1, column 0
The root cause is that the Cisco Nexus plugin model layer
is encapsulating each dictionary response from the OVS subplugin
into a list, whereas the WSGI layer is expecting a dictionary
response. The fix is not to encapsulate these responses into a list.
Change-Id: I4b589e8e5696c0eae43cafc46912b3d7f29bbdb6
Closes-Bug: #1284162
fa78601dcf