Set up an instance of Mastodon for Kosmos

Refs #19

Use new application cookbook, update our cookbooks

cookbooks/application_git/README.md

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+# Application_Git Cookbook
+
+[![Build Status](https://img.shields.io/travis/poise/application_git.svg)](https://travis-ci.org/poise/application_git)
+[![Gem Version](https://img.shields.io/gem/v/poise-application-git.svg)](https://rubygems.org/gems/poise-application-git)
+[![Cookbook Version](https://img.shields.io/cookbook/v/application_git.svg)](https://supermarket.chef.io/cookbooks/application_git)
+[![Coverage](https://img.shields.io/codecov/c/github/poise/application_git.svg)](https://codecov.io/github/poise/application_git)
+[![Gemnasium](https://img.shields.io/gemnasium/poise/application_git.svg)](https://gemnasium.com/poise/application_git)
+[![License](https://img.shields.io/badge/license-Apache_2-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0)
+
+A [Chef](https://www.chef.io/) cookbook to handle deploying code from git when
+using the [application cookbook](https://github.com/poise/application).
+
+## Quick Start
+
+To deploy from a private GitHub repository:
+
+```ruby
+application '/srv/myapp' do
+  git 'git@github.com:example/myapp.git' do
+    deploy_key chef_vault_item('deploy_keys', 'myapp')['key']
+  end
+end
+```
+
+## Requirements
+
+Chef 12 or newer is required.
+
+## Resources
+
+### `application_git`
+
+The `application_git` resource deploys code from git. It extends the core `git`
+resource to support deploy keys and disabling strict host key verification.
+
+```ruby
+application '/srv/myapp' do
+  git 'git@github.com:example/myapp.git'
+end
+```
+
+#### Actions
+
+All actions work the same as the core `git` resource.
+
+* `:sync` – Clone and checkout the requested revision *(default)*
+* `:checkout` – Checkout the request revision. If the repository isn't already
+  cloned, this action does nothing.
+* `:export` – Export the repository without the `.git` folder.
+
+#### Properties
+
+All properties from the core `git` resource work the same way with the following
+additions:
+
+* `deploy_key` – SSH key to use with git. Can be specified either as a path to
+  key file already created or as a string value containing the key directly.
+* `strict_ssh` – Enable strict SSH host key checking. *(default: false)*
+
+### DSL Usage
+
+The `application_git` resource can be used directly as a replacement for the
+core `git` resource:
+
+```ruby
+application_git '/srv/myapp' do
+  repository 'git@github.com:example/myapp.git'
+  deploy_key chef_vault_item('deploy_keys', 'myapp')['key']
+end
+```
+
+Within the `application` resource, a simplified DSL is available. As with other
+`application` plugins, the default name of the resource if unspecified is the
+application path. The following two examples are equivalent:
+
+```ruby
+application '/srv/myapp' do
+  git do
+    repository 'git@github.com:example/myapp.git'
+  end
+end
+
+application '/srv/myapp' do
+  git 'git@github.com:example/myapp.git'
+end
+```
+
+## Sponsors
+
+Development sponsored by [Chef Software](https://www.chef.io/), [Symonds & Son](http://symondsandson.com/), and [Orion](https://www.orionlabs.co/).
+
+The Poise test server infrastructure is sponsored by [Rackspace](https://rackspace.com/).
+
+## License
+
+Copyright 2015-2016, Noah Kantrowitz
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.