rackconnect? fails on non-cloud

[martinb3]

It looks like calls to rackconnect? are failing when used on non-cloud, with error "must have rackconnect ohai plugin installed". It appears that the plugin is installed, the box just isn't a cloud box. Thus, rackconnect? should probably just return false.

Also, if node['rackspace']['foo'] or any other key is set, then it fails as well.

      def rackconnected?(node)
        return false unless node.key? 'rackspace'
        if node['rackspace'].key? 'rackconnect'
          return node['rackspace']['rackconnect']['enabled']
        else
          fail 'must have rackconnect ohai plugin installed'
        end
      end

We should be able to set node['rackspace']['foo'] and still have rackconnect? not raise or fail. Probably the source of rackspace-cookbooks/rackspace_support#8.