fix mis-detection of metal machines running as VMs

libraries/system.rb

@@ -26,7 +26,7 @@ module MacOS
       end
 
       def vm?
-        @virtualization_systems.empty? || @virtualization_systems.value?('guest') ? true : false
+        @virtualization_systems.value?('guest') ? true : false
       end
     end
 

metadata.rb

@@ -4,7 +4,7 @@ maintainer_email 'chef@microsoft.com'
 license 'MIT'
 description 'Resources for configuring and provisioning macOS'
 chef_version '>= 14.0'
-version '3.2.0'
+version '3.2.1'
 
 source_url 'https://github.com/Microsoft/macos-cookbook'
 issues_url 'https://github.com/Microsoft/macos-cookbook/issues'