add wmi resource

[chris-rock]

The new WMI resource allows users to query Windows Management Instrumentation (WMI). Under the hood we use Powershell to retrieve the information:

# Get-WmiObject -class win32_service
# returns an array of results
describe wmi('win32_service') do
  its(['Path','ClassName']) { should include 'Win32_Service' }
  its('DisplayName') { should include 'Windows Remote Management (WS-Management)'}
end

# Its also possible to add filter to narrow down the result set
# therefore we can use `eq` instead of `include` here
describe wmi('win32_service', {
  filter: "name like '%winrm%'"
}) do
  its(['Path','ClassName']) { should eq 'Win32_Service' }
  its('DisplayName') { should eq 'Windows Remote Management (WS-Management)'}
end

[arlimus]

Isn't this redundant?

[arlimus]

Awesome to get WMI for Windows, thank you @chris-rock !!