add ability to install with official packages
Default install to package only for debian and rhel family
unless war for all
Missing node.save
set init style with override in package and war.
Ooops re-add author :)
[COOK-2527] enable jenkins-ci.org package repositories by default

We'll also collapse the `jenkins::repository_jenkins-ci` recipe into the
`jenkins::server_package` recipe to save some indirection.
[COOK-2527] name all private recipes with a leading underscore

The emerging Chef community idiom is to name all "private" recipes with
a leading underscore. End users should only include one of the public
recipes in their run lists: server, node, proxy. In the context of this
cookbook the default recipe is also treated as no-op now.

We will also add the following new attributes

* `node['jenkins']['node']['agent_type']` - type of agent used to
  connect to slave nodes.
* `node['jenkins']['http_proxy`]['variant']` - variant/flavor of HTTP
  proxy to use.
[COOK-2527] notify `service[jenkins]` resource directly

Since the `runit_service` resource exposes a compat `service` resource
we can notify `service[jenkins]` no matter if the server was installed
from a package or war file.
[COOK-2527] remove `node['jenkins']['server']['data_dir']`

For compatibility sake we will make a war installation share the same
directory structure as the package installation method.
[COOK-2527] update .kitchen.yml for recent changes
[COOK-2527] remove logic that restarts on plugin update

Since the `remote_file` resource used to download the plugins is using
a `:create_if_missing` action this code is never executed. We can
revisit when a `jenkins_plugin` LWRP is created.
[COOK-2527] assorted whitespace/format cleanup
[COOK-2527] add support for specifying version of package
[COOK-2527] wire in configuration to init script defaults

This ensures things like user, JENKINS_HOME, and port are wired into the
platform specific init script default files.
[COOK-2527] update README for recent changes
Merge branch 'COOK-2527'
update `.kitche.yml` to use Opscode's provisioner-less boxes