Fix DeprecationWarning when printing exception

On Python 2.6, this results in an error like:
/usr/lib/python2.6/site-packages/cinderclient/shell.py:524:
DeprecationWarning: BaseException.message has been deprecated as of
Python 2.6
  message = e.message

Should use the method from novaclient commit 8c4e145b92, which
works well with python2 and python3.

Change-Id: Ifbd78ad158ae87670bdee4e247469091efaa3260
Updated from global requirements

Change-Id: I4f26d3a8790c799e5c1f7f81031406e0c57545f9

Change-Id: Ica7315effe308bd739e90f885849fac27a3c542b
Merge "Fix DeprecationWarning when printing exception"