Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/redis/spec/client_spec.rb

@@ -0,0 +1,27 @@
+require "spec_helper"
+
+describe "redis::client" do
+  let(:chef_run) do
+    ChefSpec::SoloRunner.new.converge(described_recipe)
+  end
+
+  it { expect(chef_run).to include_recipe("redis::default") }
+
+  describe "package installation" do
+    describe "default action" do
+      it { expect(chef_run).to install_package("redis-tools") }
+      it { expect(chef_run).to_not upgrade_package("redis-tools") }
+    end
+
+    describe "when `auto_upgrade` is `true`" do
+      let(:chef_run) do
+        ChefSpec::SoloRunner.new do |node|
+          node.set["redis"]["auto_upgrade"] = true
+        end.converge(described_recipe)
+      end
+
+      it { expect(chef_run).to_not install_package("redis-tools") }
+      it { expect(chef_run).to upgrade_package("redis-tools") }
+    end
+  end
+end