Fix test_flavors to run with correct microversion

test_flavors has microversion tests FlavorsTestV2_55 and
FlavorsTestV2_61 which are suppose to run all the base class
test with respective microversion. But few tests in base class
does not set the microversion in request so they are always being
run with 2.1 version even running under FlavorsTestV2_61.

Fixing those tests by using the self._build_request() which
set the microversion on request.

Change-Id: Ic9d708e2c5559fa1adccc0e6bdb22f1143ca1fc0

nova/tests/unit/api/openstack/compute/test_flavors.py

@@ -326,7 +326,7 @@ def test_get_flavor_with_default_limit(self):
         self.stub_out('nova.api.openstack.common.get_limit_and_marker',
                       fake_get_limit_and_marker)
         self.flags(max_limit=1, group='api')
-        req = fakes.HTTPRequest.blank('/v2/fake/flavors?limit=2')
+        req = self._build_request('/flavors?limit=2')
         response = self.controller.index(req)
         response_list = response["flavors"]
         response_links = response["flavors_links"]
@@ -347,6 +347,9 @@ def test_get_flavor_with_default_limit(self):
                 ]
            }
         ]
+        if self.expect_description:
+            expected_flavors[0]['description'] = (
+                fakes.FLAVORS['1'].description)
 
         self.assertEqual(response_list, expected_flavors)
         self.assertEqual(response_links[0]['rel'], 'next')
@@ -526,7 +529,7 @@ def _test_list_flavors_with_invalid_filter(
         controller_list = self.controller.index
         if 'detail' in url:
             controller_list = self.controller.detail
-        req = self.fake_request.blank(self._prefix + url)
+        req = self._build_request(url)
         self.assertRaises(expected_exception,
                           controller_list, req)
 
@@ -574,6 +577,12 @@ def _test_list_flavors_duplicate_query_parameters_validation(
         }]
         if expected:
             expected_resp[0].update(expected)
+        if self.expect_description:
+            expected_resp[0]['description'] = (
+                fakes.FLAVORS['2'].description)
+        if 'detail' in url and self.expect_extra_specs:
+            expected_resp[0]['extra_specs'] = (
+                fakes.FLAVORS['2'].extra_specs)
         params = {
             'limit': 1,
             'marker': 1,
@@ -585,8 +594,8 @@ def _test_list_flavors_duplicate_query_parameters_validation(
         }
 
         for param, value in params.items():
-            req = self.fake_request.blank(
-                self._prefix + url + '?marker=1&%s=%s&%s=%s' %
+            req = self._build_request(
+                url + '?marker=1&%s=%s&%s=%s' %
                 (param, value, param, value))
             result = controller_list(req)
             self.assertEqual(expected_resp, result['flavors'])
@@ -632,7 +641,13 @@ def _test_list_flavors_with_allowed_filter(
         }]
         if expected:
             expected_resp[0].update(expected)
-        req = self.fake_request.blank(self._prefix + url + '&limit=1&marker=1')
+        if self.expect_description:
+            expected_resp[0]['description'] = (
+                fakes.FLAVORS['2'].description)
+        if 'detail' in url and self.expect_extra_specs:
+            expected_resp[0]['extra_specs'] = (
+                fakes.FLAVORS['2'].extra_specs)
+        req = self._build_request(url + '&limit=1&marker=1')
         result = controller_list(req)
         self.assertEqual(expected_resp, result['flavors'])