[FIX] auditlog: ensure methods from test template are actually run

Since odoo/odoo@6dc96811c24ec, test methods from
inherited test classes are not run by default.

Author: StefanRijnhart

auditlog/tests/test_auditlog.py

@@ -11,6 +11,12 @@
 
 
 class AuditlogCommon:
+    """Base case with basic log creation tests"""
+
+    # Ensure that test cases that inherit from this class run the methods
+    # that it provides.
+    allow_inherited_tests_method = True
+
     def test_LogCreation(self):
         """First test, caching some data."""
         self.groups_rule.set_to_confirmed()