Fix pre_test_hook fail and sidebar menu fail

It fixes two small but important bugs:
- remove apache restart, because it fails pre_test_hook, which fails
  test build (the latter implication was introduced recently in a
  devstack-gate scripts);
- fix sidebar menu item click before prev item was collapsed, because
  in this case menu item won't be expanded (supposedly a result of
  recent update of one of XStatic dependencies).

Change-Id: If463c4c8b16b54f033e2a2ee33ba995ca7844f2b
Closes-Bug: #1573726

openstack_dashboard/test/integration_tests/regions/menus.py

@@ -123,7 +123,8 @@ class NavigationAccordionRegion(baseregion.BaseRegion):
                     # it. Otherwise selenium will complain with
                     # MoveTargetOutOfBoundsException
                     selected_item.click()
-                    self._wait_until_transition_ends(selected_item)
+                    self._wait_until_transition_ends(
+                        self._get_menu_list_next_to_menu_title(selected_item))
                 else:
                     is_already_within_required_item = True
 

tools/gate/integration/pre_test_hook.sh

@@ -6,4 +6,3 @@ set -x
 
 cd /opt/stack/new/horizon/openstack_dashboard/local/local_settings.d
 mv _20_integration_tests_scaffolds.py.example _20_integration_tests_scaffolds.py
-sudo service apache2 restart