added missing sudoers default config file
Check configuration file and notify sudo

Avoid a bad configuration to be set.
Merge pull request #36 from tosmi/aix

added missing sudoers default config file
Merge pull request #37 from mremy/check_new_config_then_notify

Check configuration file and notify sudo
Update module version to 2.4.1
Fix syntax check, add spec test
Merge pull request #38 from smarlow/fix_syntax_check

Fix syntax check, add spec test
Update module version to 2.4.2