tests: Added xstartserv script, update config for replication, increase flease...

tests: Added xstartserv script, update config for replication, increase flease timeouts for testing.

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@2471 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534