When using the -v option, displays curl equivalent commands and http
messages exchanged with the nova and cinder API servers. Displays the
same messages as those displayed with the --debug option of
python-novaclient and python-cinderclient.
Implements: blueprint curl-commands-in-debugging-messages for nova and
cinder related calls
Change-Id: Ibc8ef79d874334585b81d652b9c7df9e874fffa9