Specs should test attributes by generating .with() clauses

[AMeng]

Generated specs do not test any extra attributes. For example:

Recipe:

template "destination" do
  source "source"
end

Generated spec currently:

it "creates the destination template" do
  expect(chef_run).to create_template("destination")
end

Generated spec should look like:

it "creates the destination template" do
  expect(chef_run).to create_template("destination").with({:source => "source"})
end