Convert multiple-create v3 plugin to v2.1

Changes required to have the multiple create v3 plugin natively
support the v2.1 API. The following Server creation parameters
are reverted:

os-multiple-create:min_count -> min_count
os-multiple-create:max_count -> max_count
os-multiple-create:return_reservation_id -> return_reservation_id

Removes min_count parameter for a test which should never have
been included but due to a gap in input validation was ignored.

Partially implements blueprint v2-on-v3-api

Change-Id: Ie435c357958066e9fde40eab54826261ee9d4226

nova/api/openstack/compute/plugins/v3/multiple_create.py

@@ -22,9 +22,9 @@ from nova.openstack.common import strutils
 from nova import utils
 
 ALIAS = "os-multiple-create"
-MIN_ATTRIBUTE_NAME = "%s:min_count" % ALIAS
-MAX_ATTRIBUTE_NAME = "%s:max_count" % ALIAS
-RRID_ATTRIBUTE_NAME = "%s:return_reservation_id" % ALIAS
+MIN_ATTRIBUTE_NAME = "min_count"
+MAX_ATTRIBUTE_NAME = "max_count"
+RRID_ATTRIBUTE_NAME = "return_reservation_id"
 
 
 class MultipleCreate(extensions.V3APIExtensionBase):

nova/tests/api/openstack/compute/contrib/test_block_device_mapping.py

@@ -64,7 +64,6 @@ class BlockDeviceMappingTestV21(test.TestCase):
     def _get_servers_body(self, no_image=False):
         body = {
             'server': {
-                'min_count': 2,
                 'name': 'server_test',
                 'imageRef': '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6',
                 'flavorRef': 'http://localhost/123/flavors/3',

nova/tests/api/openstack/compute/contrib/test_block_device_mapping_v1.py

@@ -70,7 +70,6 @@ class BlockDeviceMappingTestV21(test.TestCase):
     def _get_servers_body(self, no_image=False):
         body = {
             'server': {
-                'min_count': 2,
                 'name': 'server_test',
                 'imageRef': '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6',
                 'flavorRef': 'http://localhost/123/flavors/3',

nova/tests/integrated/test_servers.py

@@ -514,8 +514,6 @@ class ServersTestV3(client.TestOpenStackClientV3Mixin, ServersTest):
     _api_version = 'v3'
     _image_ref_parameter = 'imageRef'
     _flavor_ref_parameter = 'flavorRef'
-    _return_resv_id_parameter = 'os-multiple-create:return_reservation_id'
-    _min_count_parameter = 'os-multiple-create:min_count'
     _access_ipv4_parameter = None
     _access_ipv6_parameter = None