Jenkins drive space issue this morning.

[Robert Middleswarth]

Jenkins master ran out of space this morning.  I was able to remove a 
few jobs and clean up some space to get Jenkins back online. After 
review things we found a 11G log file I moved it out of the way and now 
we have more space free.  I updated log rotate to adjust move the log 
files around and purge them after 7 days.  If anyone has an issue with 
that let me know.  This should keep the space down some until we can 
move Jenkins to a new system.

Thanks
Robert