Standardize on ID for log messages

We have some places where logs use name to identify
a volume and others where we use ID.  Let's standardize
on the UUID here as that's typically the unique identifier
we use in most places anyway.  Even though name is a
derviative it seems better to be consistent with this
and use the UUID by itself.

Change-Id: Iaee3d146042780e4a526834db1e0be84a705f24b
Fixes: bug 1214140
Merge "Standardize on ID for log messages"