ginkgo should return 0 when it fails

[objcode]

When gservice starts up it incorrectly returns a 0 return code for the following error cases:

1. Logging permissions aren't met, and log file can't be opened
2. gevent cannot be imported due to libevent configuration error
3. PIDfile can't be locked.

I've included the traceback for issue #3 below.

Traceback (most recent call last): File "/usr/local/python/bin/gservice", line 8, in load_entry_point('gservice==0.2.0', 'console_scripts', 'gservice')() File "/usr/local/python/lib/python2.7/site-packages/gservice-0.2.0-py2.7.egg/gservice/runner.py", line 22, in main Runner().do_action() File "/usr/local/python/lib/python2.7/site-packages/gservice-0.2.0-py2.7.egg/gservice/runner.py", line 255, in do_action getattr(self, func)(_args, _kwargs) File "/usr/local/python/lib/python2.7/site-packages/gservice-0.2.0-py2.7.egg/gservice/runner.py", line 247, in _start super(Runner, self)._start() File "/usr/local/python/lib/python2.7/site-packages/python_daemon-1.6-py2.7.egg/daemon/runner.py", line 124, in _start self.daemon_context.open() File "/usr/local/python/lib/python2.7/site-packages/python_daemon-1.6-py2.7.egg/daemon/daemon.py", line 346, in open self.pidfile.enter() File "build/bdist.linux-i686/egg/lockfile/init.py", line 226, in enter File "/usr/local/python/lib/python2.7/site-packages/python_daemon-1.6-py2.7.egg/daemon/pidfile.py", line 42, in acquire super(TimeoutPIDLockFile, self).acquire(timeout, _args, _kwargs) File "build/bdist.linux-i686/egg/lockfile/pidlockfile.py", line 85, in acquire lockfile.LockTimeout

[progrium]

RuntimeErrors will cause it to error using argparse, which will exit non-zero.