Replace omnibus_updater with chef_client_updater

omnibus_updater is deprecated

cookbooks/chef_client_updater/README.md

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+# chef_client_updater
+
+[![Build Status](https://travis-ci.org/chef-cookbooks/chef_client_updater.svg?branch=master)](https://travis-ci.org/chef-cookbooks/chef_client_updater) [![Cookbook Version](https://img.shields.io/cookbook/v/chef_client_updater.svg)](https://supermarket.chef.io/cookbooks/chef_client_updater)
+
+This cookbook updates the chef-client
+
+## Requirements
+
+### Platforms
+
+- All platforms with a chef-client package on downloads.chef.io
+
+### Chef
+
+- Chef 12.1+
+
+### Cookbooks
+
+- compat_resource
+
+### Usage
+
+This cookbook provides both a custom resource and a default recipe. The default recipe simply uses the custom resource with a set of attributes. You can add chef_client_updater::default to your run list or use the custom resource in a wrapper cookbook.
+
+### chef_client_updater
+
+Installs the mixlib-install/mixlib-install gems and upgrades the chef-client.
+
+#### properties
+
+- `channel` - The chef channel you fetch the chef client from. `stable` contains all officially released chef-client builds where as `current` contains unreleased builds. Default: `stable`
+- `prevent_downgrade` - Don't allow this cookbook to downgrade the chef-client version. Default: true
+- `version` - The version of the chef-client to install. Default :latest
+- `post_install_action` - After installing the chef-client what should we do. `exec` to exec the new client or `kill` to kill the client and rely on the init system to start up the new version. Default: `exec`
+- `exec_command` - The chef-client command. default: $PROGRAM_NAME.split(' ').first
+- `exec_args` - An array of arguments to exec the chef-client with. default: ARGV
+
+#### examples
+
+```ruby
+chef_client_updater 'Install latest'
+```
+
+```ruby
+chef_client_updater 'Install 12.13.36 and kill' do
+  version '12.13.36'
+  post_install_action 'kill'
+end
+```
+
+## License & Authors
+
+- Author: Tim Smith ([tsmith@chef.io](mailto:tsmith@chef.io))
+
+```text
+Copyright:: 2016-2017, Chef Software, Inc
+
+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.
+```