Converted plugins/openbsd/network to Mixlib::ShellOut.
Converted plugins/openbsd/platformt o Mixlib::ShellOut.
Converted plugins/openbsd/uptime to Mixlib::ShellOut.
Converted plugins/openbsd/virtualization to Mixlib::ShellOut.
Converted plugins/freebsd/cpu to Mixlib::ShellOut.
Converted plugins/freebsd/filesystem to Mixlib::ShellOut.
Converted plugins/freebsd/hostname to Mixlib::ShellOut.
Converted plugins/freebsd/kernel to Mixlib::ShellOut.