Converted plugins/solaris2/virtualization to Mixlib::ShellOut.
Converted plugins/solaris2/zpools to Mixlib::ShellOut.
Converted plugins/netbsd/cpu to Mixlib::ShellOut.
Converted plugins/netbsd/filesystem to Mixlib::ShellOut.
Converted plugins/netbsd/hostname to Mixlib::ShellOut.
Converted plugins/netbsd/kernel to Mixlib::ShellOut.