Document InSpec OR features

[chris-rock]

Description

Default Serverspec and RSpec do not support OR tests. InSpec added this feature:

describe.one do
  describe ssh_config do
    its('Protocol') { should eq('3') }
  end
  describe ssh_config do
    its('Protocol') { should eq('2') }
  end
end

That allows you to write a control and test for a or b

control 'or-test' do
  impact 1.0
  title 'This is a OR test'
  describe.one do
    describe ssh_config do
      its('Protocol') { should eq('3') }
    end
    describe ssh_config do
      its('Protocol') { should eq('2') }
    end
  end
end