Expired events can be present in the collect result

Is there any option to expire the facts before fireAllRules()?

A reproducer for drools 6.5.0.Final-redhat-25 (tested too on 7.23.0.Final-redhat-00002 and 7.24.0.Final) shows that facts are not expired until we run fireAllRules().

Trying reproducer:

Show facts are expired after fireAllRules():

```
unzip -d reproducer reproducer-02425402.zip
cd reproducer
git checkout master
./run.sh
```

Show facts are not expired before fireAllRules():

```
git checkout original
./run.sh
```