Displaying curl commands for nova and cinder calls

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
Fix image set properties error

Change-Id: Ia290935c8a040221caf1a46ca29a7bb2e5df1ce6
Fix errant underscores

Change-Id: I71b8c8df14b85e3042220e3593a9732ee6cefe15
Merge "Displaying curl commands for nova and cinder calls"
Merge "Fix errant underscores"
Merge "Fix image set properties error"