Add owner-, groupship and permissions to file resources

[lbetz]

to protect for wrong permissions set by default resource for file.

[altona93]

Icinga does not start on Ubuntu when installed via Puppet due to the wrong permissions of /etc/icinga2. Fix should be easy.

either
file { $conf_dir:
ensure => directory,
owner => $user,
group => $group,
}
or remove the file resource completely as the dir will be created by the package with correct permissions anyway.

[lbetz]

Management of $conf_dir is removed with #369.

[lbetz]

Management of cons_dir is back again, and now with ownership and group.