Improve restbase init

- Log any remaining console output to syslog. There is basically none, but in
  case there is some uncaught exception or an out-of-heap situation it's
  better to capture the info in syslog.
- Reduce the ulimit -n setting to 200k. In stress testing the high watermark I
  observed was around 50k connections. More powerful hardware will likely
  sustain more connections, so 200k should be a good compromise.

Change-Id: I8356e0bd08fb51f5efc27837f1c35fec0e6a4130
Merge "Improve restbase init" into production