Check domain's enabled attribute strictly

Current test_domains checks domain's enabled attribute after converting
it to string because maybe that is for XML format. However, now Tempest
doesn't test XML format and the response of "create domain" is checked
as True instead of converting it to string.
This patch removes these conversions for checking boolean attribute.

Change-Id: I958de1e13b0169b03b56e4db1872d5ccf4e8904e
diff --git a/tempest/api/identity/admin/v2/test_users.py b/tempest/api/identity/admin/v2/test_users.py
index bcac853..8eac80c 100644
--- a/tempest/api/identity/admin/v2/test_users.py
+++ b/tempest/api/identity/admin/v2/test_users.py
@@ -50,7 +50,7 @@
                                        self.alt_email, enabled=False)
         self.data.users.append(user)
         self.assertEqual(name, user['name'])
-        self.assertEqual('false', str(user['enabled']).lower())
+        self.assertEqual(False, user['enabled'])
         self.assertEqual(self.alt_email, user['email'])
 
     @test.idempotent_id('39d05857-e8a5-4ed4-ba83-0b52d3ab97ee')
@@ -71,13 +71,13 @@
                                               enabled=False)
         self.assertEqual(u_name2, update_user['name'])
         self.assertEqual(u_email2, update_user['email'])
-        self.assertEqual('false', str(update_user['enabled']).lower())
+        self.assertEqual(False, update_user['enabled'])
         # GET by id after updating
         updated_user = self.client.get_user(user['id'])
         # Assert response body of GET after updating
         self.assertEqual(u_name2, updated_user['name'])
         self.assertEqual(u_email2, updated_user['email'])
-        self.assertEqual('false', str(updated_user['enabled']).lower())
+        self.assertEqual(False, update_user['enabled'])
 
     @test.idempotent_id('29ed26f4-a74e-4425-9a85-fdb49fa269d2')
     def test_delete_user(self):
diff --git a/tempest/api/identity/admin/v3/test_domains.py b/tempest/api/identity/admin/v3/test_domains.py
index b775e91..b1a9d3b 100644
--- a/tempest/api/identity/admin/v3/test_domains.py
+++ b/tempest/api/identity/admin/v3/test_domains.py
@@ -79,12 +79,12 @@
         self.assertIsNotNone(updated_domain['id'])
         self.assertEqual(new_name, updated_domain['name'])
         self.assertEqual(new_desc, updated_domain['description'])
-        self.assertEqual('true', str(updated_domain['enabled']).lower())
+        self.assertEqual(True, updated_domain['enabled'])
 
         fetched_domain = self.client.get_domain(domain['id'])
         self.assertEqual(new_name, fetched_domain['name'])
         self.assertEqual(new_desc, fetched_domain['description'])
-        self.assertEqual('true', str(fetched_domain['enabled']).lower())
+        self.assertEqual(True, fetched_domain['enabled'])
 
     @test.idempotent_id('036df86e-bb5d-42c0-a7c2-66b9db3a6046')
     def test_create_domain_with_disabled_status(self):
diff --git a/tempest/api/identity/admin/v3/test_endpoints.py b/tempest/api/identity/admin/v3/test_endpoints.py
index 1672d47..9ca10a4 100644
--- a/tempest/api/identity/admin/v3/test_endpoints.py
+++ b/tempest/api/identity/admin/v3/test_endpoints.py
@@ -126,4 +126,4 @@
         self.assertEqual(interface2, endpoint['interface'])
         self.assertEqual(url2, endpoint['url'])
         self.assertEqual(region2, endpoint['region'])
-        self.assertEqual('false', str(endpoint['enabled']).lower())
+        self.assertEqual(False, endpoint['enabled'])
diff --git a/tempest/api/identity/admin/v3/test_users.py b/tempest/api/identity/admin/v3/test_users.py
index 7fe369e..c2456c4 100644
--- a/tempest/api/identity/admin/v3/test_users.py
+++ b/tempest/api/identity/admin/v3/test_users.py
@@ -53,7 +53,7 @@
         self.assertEqual(project['id'],
                          update_user['project_id'])
         self.assertEqual(u_email2, update_user['email'])
-        self.assertEqual('false', str(update_user['enabled']).lower())
+        self.assertEqual(False, update_user['enabled'])
         # GET by id after updation
         new_user_get = self.client.get_user(user['id'])
         # Assert response body of GET after updation
@@ -62,7 +62,7 @@
         self.assertEqual(project['id'],
                          new_user_get['project_id'])
         self.assertEqual(u_email2, new_user_get['email'])
-        self.assertEqual('false', str(new_user_get['enabled']).lower())
+        self.assertEqual(False, new_user_get['enabled'])
 
     @test.idempotent_id('2d223a0e-e457-4a70-9fb1-febe027a0ff9')
     def test_update_user_password(self):