Adds a radosgw lwrp

Run the radosgw lwrp immediately to add an extra radosgw installation
This will set up the ceph.conf appropriately to have the necessary settings
Then run the radosgw.rb recipe to set up any necessary keys

The ceph_test::radosgw_zone has an example of how to run the lwrp immediately
Adds apache vhost support for the radosgw lwrp
Adds aliases for custom radosgw configurations
Adds documentation about the custom radosgw lwrp