remove hardcoded test_reports dir

The aim of this PS is to remove hardcoded test_reports dir path
so test run can get screenshot dir from the specified configuration.

Change-Id: I454ccdccbed93b831c41199481caf8b5eb302337

openstack_dashboard/test/integration_tests/config.py

@@ -123,7 +123,7 @@ SeleniumGroup = [
         help='Timeout in seconds to wait for a page to become available'),
     cfg.StrOpt(
         'screenshots_directory',
-        default='integration_tests_screenshots',
+        default='test_reports',
         help='Output directory for screenshots'),
     cfg.BoolOpt(
         'maximize_browser',

openstack_dashboard/test/integration_tests/helpers.py

@@ -224,9 +224,9 @@ class BaseTestCase(testtools.TestCase):
 
     @property
     def _test_report_dir(self):
-        report_dir = os.path.join(ROOT_PATH, 'test_reports',
-                                  '{}.{}'.format(self.__class__.__name__,
-                                                 self._testMethodName))
+        report_dir = os.path.join(
+            ROOT_PATH, self.CONFIG.selenium.screenshots_directory,
+            '{}.{}'.format(self.__class__.__name__, self._testMethodName))
         if not os.path.isdir(report_dir):
             os.makedirs(report_dir)
         return report_dir

openstack_dashboard/test/integration_tests/horizon.conf

@@ -20,7 +20,7 @@ page_timeout=60
 
 # Output directory for screenshots.
 # (string value)
-screenshots_directory=integration_tests_screenshots
+screenshots_directory=test_reports
 
 # Implicit timeout to wait until element become available,
 # this timeout is used for every find_element, find_elements call.