rubocop compliance

all cops now pass except for the following
(which are silenced in .rubocop.yml )

* LineLength, MethodLength: not sure if we care about these
* WordArray: I prefer [] vs %w{} for readability.

Conflicts:
	metadata.rb
	recipes/common.rb
	recipes/openvswitch.rb
	spec/openvswitch_spec.rb

Change-Id: I92996b5db9f292e9ba93c7619ca727ffa92ddd71