fixing undefined local variable or method block in honor_local_mode

After updating to the latest cheffish, we are receiving the following error from our kitchen driver that uses `honor_local_mode`:
```
[Execute platform_win:kitchen:middle-tier-windows-2012R2] Kitchen::ActionFailed: Failed to complete #create action: [undefined local variable or method `block' for Cheffish:Module]

Stacktrace:
/home/teamcity/.chefdk/gem/ruby/2.1.0/gems/cheffish-0.8.3/lib/cheffish.rb:69:in `honor_local_mode'
/home/teamcity/.chefdk/gem/ruby/2.1.0/gems/clc-chef-metal-vsphere-0.3.56/lib/kitchen/driver/vsphere.rb:55:in `with_metal_driver'
```

Adding `&block` to the parameter list to fix.