Verify functionalioty with old version of cli
Verify functionalioty with old version of cli

Testing functionality for old version of the `delivery-cli`
```
Failures:

  1) DeliverySugar::DSL#delivery_workspace when old version of delivery-cli sets partial attribute returns the default workspace
     Failure/Error: expect(subject.delivery_workspace).to eq(default_workspace)

       expected: "/var/opt/delivery/workspace"
            got: nil

       (compared using ==)
     # ./spec/unit/delivery_dsl_spec.rb:63:in `block (4 levels) in <top
     # (required)>'

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134 examples, 1 failure

Failed examples:

rspec ./spec/unit/delivery_dsl_spec.rb:62 # DeliverySugar::DSL#delivery_workspace when old version of delivery-cli sets partial attribute returns the default workspace
```

chef-cookbooks/delivery-sugar