fix flake8 errors

This patch fix the flake8 errors raised by "run_tests.sh -p"

Change-Id: I1e2510ef4438932011ea28e72f36536252764ce5
Closes-Bug: #1290226
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index ddf37ce..778294e 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -186,8 +186,7 @@
 
         admin_pass = self.image_ssh_password
 
-        resp, server_no_eph_disk = (self.
-                                    create_test_server(
+        resp, server_no_eph_disk = (self.create_test_server(
                                     wait_until='ACTIVE',
                                     adminPass=admin_pass,
                                     flavor=flavor_no_eph_disk_id))
diff --git a/tempest/api/compute/v3/admin/test_quotas.py b/tempest/api/compute/v3/admin/test_quotas.py
index 0c138bb..536891c 100644
--- a/tempest/api/compute/v3/admin/test_quotas.py
+++ b/tempest/api/compute/v3/admin/test_quotas.py
@@ -56,7 +56,7 @@
     def test_get_quota_set_detail(self):
         # Admin can get the detail of resource quota set for a tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        expected_detail = {'reserved', 'limit', 'in_use'}
+        expected_detail = ['reserved', 'limit', 'in_use']
         resp, quota_set = self.adm_client.get_quota_set_detail(
             self.demo_tenant_id)
         self.assertEqual(200, resp.status)
diff --git a/tempest/api/compute/v3/servers/test_create_server.py b/tempest/api/compute/v3/servers/test_create_server.py
index a212ca5..7e9aaf2 100644
--- a/tempest/api/compute/v3/servers/test_create_server.py
+++ b/tempest/api/compute/v3/servers/test_create_server.py
@@ -195,8 +195,7 @@
 
         admin_pass = self.image_ssh_password
 
-        resp, server_no_eph_disk = (self.
-                                    create_test_server(
+        resp, server_no_eph_disk = (self.create_test_server(
                                     wait_until='ACTIVE',
                                     adminPass=admin_pass,
                                     flavor=flavor_no_eph_disk_id))
diff --git a/tempest/api/volume/test_volumes_get.py b/tempest/api/volume/test_volumes_get.py
index 175da01..be5d76b 100644
--- a/tempest/api/volume/test_volumes_get.py
+++ b/tempest/api/volume/test_volumes_get.py
@@ -124,8 +124,8 @@
         resp, new_volume = \
             self.client.create_volume(size=1,
                                       display_description=new_v_desc,
-                                      availability_zone=volume[
-                                      'availability_zone'])
+                                      availability_zone=
+                                      volume['availability_zone'])
         self.assertEqual(200, resp.status)
         self.assertIn('id', new_volume)
         self.addCleanup(self._delete_volume, new_volume['id'])
@@ -133,8 +133,8 @@
         resp, update_volume = \
             self.client.update_volume(new_volume['id'],
                                       display_name=volume['display_name'],
-                                      display_description=volume[
-                                      'display_description'])
+                                      display_description=
+                                      volume['display_description'])
         self.assertEqual(200, resp.status)
 
         # NOTE(jdg): Revert back to strict true/false checking
diff --git a/tempest/api/volume/v2/test_volumes_list.py b/tempest/api/volume/v2/test_volumes_list.py
index 0e91371..fff40ed 100644
--- a/tempest/api/volume/v2/test_volumes_list.py
+++ b/tempest/api/volume/v2/test_volumes_list.py
@@ -116,8 +116,8 @@
                           ('details' if with_detail else '', key)
                     if key == 'metadata':
                         self.assertThat(volume[key].items(),
-                                        matchers.ContainsAll(params[key]
-                                        .items()), msg)
+                                        matchers.ContainsAll(
+                                            params[key].items()), msg)
                     else:
                         self.assertEqual(params[key], volume[key], msg)