fix(test): patch check_index_template

Author: aaxelb

osf_tests/metrics/test_daily_report.py

@@ -10,8 +10,9 @@
 class TestDailyReportKey:
     @pytest.fixture
     def mock_save(self):
-        with mock.patch('elasticsearch6_dsl.Document.save', autospec=True) as mock_save:
-            yield mock_save
+        with mock.patch('elasticsearch_metrics.imps.elastic6.BaseMetric.check_index_template'):
+            with mock.patch('elasticsearch6_dsl.Document.save', autospec=True) as mock_save:
+                yield mock_save
 
     def test_default(self, mock_save):
         # only one of this type of report per day