Changes and comments are not stored by Redmine backend

[sduenas]

Redmine backend doesn't retrieve data about changes nor comments.

> bicho --db-user-out=root --db-password-out="" --db-database-out=bicho_test --backend-user="" --backend-password="" -d 1 -b redmine -u http://tracker.ceph.com/projects/devops/issues.json

Checking URL: http://tracker.ceph.com
Running Bicho with delay of 1 seconds
Issue #2415 updated on 2012-06-29 16:57:10
Issue #2498 updated on 2012-06-29 16:57:10
...
Issue #6750 updated on 2013-11-12 17:26:15
Issue #6739 updated on 2013-11-12 17:28:38
'Total pages: 19'
Done. Bugs analyzed:475

mysql> use bicho_test;
Database changed
mysql> select count(*) from issues;
+----------+
| count(*) |
+----------+
|      439 |
+----------+
1 row in set (0.00 sec)

mysql> select count(*) from changes;
+----------+
| count(*) |
+----------+
|        0 |
+----------+
1 row in set (0.00 sec)

mysql> select count(*) from comments;
+----------+
| count(*) |
+----------+
|        0 |
+----------+
1 row in set (0.00 sec)