My version of chef (10.12) throws ResourceNotFound error not ArgumentError, so trap both
Merge pull request #5 from halkeye/master

Trap ResourceNotFound error for collectd_python_plugin
Trap exception in delete_old_plugins
Merge pull request #9 from sciurus/master

Handle exception in delete_old_plugin
Add name field for chef 11
Merge from upstream coderanger repo to fix delete_old_plugins