Automatically recalculate Conditions by interval

Current Situation

Every time a task ends, the In Conditions for the running job streams will be checked.
The effect for In Conditions that check for existence of files as e.g. with "fileexist:myfile" is that they will not be recalculated on arrival of a file but on completion of an arbitrary task.

Desired Behavior

There should be an automated recalculation of In Conditions. The default repeat time is 2 minutes. This can be adjusted with the parameter "sos.jobstream_check_interval" in the JobScheduler Master's ./config/scheduler.xml file.

<param name="sos.jobstream_check_interval" value="3"/>