Fixed typos and deprecated parameters

Removed the old parameters in nova.conf examples to interact with
nova-volumes (code is removed in grizzly).
Removed duplicate commands to sync nova database.
Changed the ids in Ch7: Verifying the Image Service Installation to
reflect those created in the Glance chapter.

Change-Id: Ie587f258ce3bafff0d32842e2da5115afcff41f9
Fixes: bug #1176908
Merge "Fixed typos and deprecated parameters"