added syslog options
Merge pull request #59 from jaypipes/working

Separate out keystone registration calls from other recipes
Merge pull request #56 from jhtran/add_syslog

added syslog options
Adds rsync of datadir if file default store

* Parameterizes the filesystem_store_datadir config option
* Adds configurable rsync of datadir between nodes in an environment
  that have a certain glance API chef role when the filesystem
  is the default store.