cpu plugin incorrectly detection old collectd version

[fnoop]

Affected Puppet, Ruby, OS and module versions/distributions

• Puppet: 5.0.0
• Ruby: 2.1.3
• Distribution: Raspbian Jessie
• Module version: 5.3.0

How to reproduce (e.g Puppet code you use)

    class { 'collectd::plugin::cpu':
        reportbystate => true,
        reportbycpu => true,
        valuespercentage => true,
    }

What are you seeing

If manage_package = false, the cpu plugin is still detecting an old installed package (collectd 5.4) and thus not enabling the cpu parameters valuespercentage etc.
In fact, collectd on this system is installed from source (5.7) and is functioning correctly - if manage_package is set to false, it should not look at the installed packaged version but instead either use minimum_version or some other way of determining collectd version.

What behaviour did you expect instead

Expected to get cpu config with valuespercentage and other 5.5+ parameters, but actually they are missing.

Output log

Any additional information you'd like to impart

[fnoop]

If I uninstall the old system collectd packages, then this behaves as expected, correctly.