Set up an instance of Mastodon for Kosmos

Refs #19

Use new application cookbook, update our cookbooks

cookbooks/git/libraries/provider_git_client.rb

@@ -0,0 +1,13 @@
+class Chef
+  class Provider
+    class GitClient < Chef::Provider::LWRPBase
+      use_inline_resources
+
+      def whyrun_supported?
+        true
+      end
+
+      include GitCookbook::Helpers
+    end
+  end
+end