saltstack/salt — pull request #16532 by jacksontj (2014-10-10 00:37:15+00:00)
Title: fix for ping_on_rotate not in config

Since this isn't a default (in config.py), if you didn't set it you get backtraces from _clear_old_jobs:

```
Process Process-1:
Traceback (most recent call last):
File "/usr/lib64/python2.6/multiprocessing/process.py", line 232, in _bootstrap
self.run()
File "/usr/lib64/python2.6/multiprocessing/process.py", line 88, in run
self._target(*self._args, **self._kwargs)
File "/home/thjackso/src/salt-github/salt/master.py", line 162, in _clear_old_jobs
if self.opts['ping_on_rotate']:
KeyError: 'ping_on_rotate'
```