Adds O'Reilly content with edits since May 5th 2014

- Also includes these changes:
  GlusterFS supports Block Storage
  Fix options for nova flavor-access-list
  Fixes bug 1316040 - reference a generic SQL database
  "once instance" -> "one instance"
  recover sheepdog doc

Change-Id: I81f57c189bb5138c89f0208404f31c4453ec0aac