Improve eos_start_pre.sh and eos_start.sh
eos_start_pre.sh
- try to reduce the time of chown operations that can take a lot of time is report directory is big
- add TimeoutStartSec=300 to eos@.service to allow a longer starting time
eos_start.sh
- make sure that the xrootd binary see the proper libs (even if RPATH is set to the proper path)
Both of these are currently in production.