This work refactors the rabbitmq module to create rabbitmq::install, and
modernize aspects of the module.  Everything from specs to the README
is affected by this work.

The overall intent is to make it so that it works on Redhat as well as
Debian which fails currently due to duplicated resources.  Many new
features are added, such as `erlang_manage` to optionally use an
external erlang module to install erlang (this module no longer touches
erlang).
Remove relversion as a parameter and just build it out from $version.
Add framework for rspec-system tests.
Merge pull request #71 from apenney/refactor-installation

Refactor installation/few other bits.
Adding ability to configure cluster node type

Deprecating cluster_disk_nodes in favor of cluster_nodes and cluster_node_type
Updating README to reflect cluster node changes
Updating tests to handle cluster config changes
Merge pull request #69 from brwyatt/Add-Node-Cluster-Type

Add node cluster type
Refactor rabbitmq::server heavily and rename it to rabbitmq::config.
This makes all the parameters come from the main rabbitmq class as
well as refactoring the wipe database stuff to be slightly more
portable.
Add the parameters and variables needed for rabbitmq::config.
Delete this.
Make sure we @ all variables to remove warnings.
Rework the spec tests to be appropriate to rabbitmq::config.
Add a rabbitmq_erlang_cookie as a replacement for grepping the file.
This could be a security problem, so I'll need community feedback on
how OK this is.
Rename these to add .erb.
Fix all the current spec problems but moving the cluster depreciation
handling back to rabbitmq::config and iterating over the right thing.
Document the other parameters.
Merge pull request #74 from apenney/refactor-server

WIP: Refactor rabbitmq::server to rabbitmq::config.
Fix this, guess you don't have to escape these.
Merge pull request #76 from apenney/docs

Fix this, guess you don't have to escape these.