add Layout/RescueEnsureAlignment excluding files to .rubocop.yml

git-svn-id: http://svn.redmine.org/redmine/trunk@20487 e93f8b46-1217-0410-a6f0-8f06a7374b81

.rubocop.yml

 Layout/EmptyLineBetweenDefs:
   AllowAdjacentOneLineDefs: true
 
+Layout/RescueEnsureAlignment:
+  Enabled: true
+  Exclude:
+    - 'db/migrate/085_add_role_tracker_old_status_index_to_workflows.rb'
+
 Layout/SpaceAroundEqualsInParameterDefault:
   Enabled: false