Change-Id: I3fe27d98efa5090e084c676f7f8e6dad0157ed21

Nothing too complicated here.  I fixed a bunch of spacing issues
that I saw in OSC.

Change-Id: I935ab48e7c5bac5f88ecdb3a05f73fb44fc9f41d

As bug #1477199 describes, the wrong comment below is all over the
unit test code of OSC.

    # DisplayCommandBase.take_action() returns two tuples

There is no such class named DisplayCommandBase in OSC. It is in cliff.

All OSC command classes inherit from the base classes in cliff,
class Command, class Lister and class ShowOne. It is like this:

Object
|--> Command
     |--> DisplayCommandBase
          |--> Lister
          |--> ShowOne

take_action() is an abstract method of class Command, and generally is
overwritten by subclasses.
* Command.take_action() returns nothing.
* Lister.take_action() returns a tuple which contains a tuple of columns
  and a generator used to generate the data.
* ShowOne.take_action() returns an iterator which contains a tuple of
  columns and a tuple of data.

So, this problem should be fixed in 3 steps:
1. Remove all DisplayCommandBase comments for tests of classes inheriting
   from class Command in cliff as it returns nothing.
2. Fix all DisplayCommandBase comments for tests of classes inheriting
   from class Lister in cliff. Lister.take_action() returns a tuple and
   a generator.
3. Fix all DisplayCommandBase comments for tests of classes inheriting
   from class ShowOne in cliff. ShowOne.take_action() returns two tuples.

This patch finishes step 2 in all but identity tests. There are too many
such comments in identity tests. So fix them all in another patch.

Change-Id: I00f38d12f55abe20fa708f6349073da658622f8d
Partial-bug: #1477199

columns and datalist has been set in each test case in compute,
which is not necessary. This patch abstract it out and remove
all redundant code.

Change-Id: I45a3582088161f12e60e7c933da8e7dcc0ae8e7b
Closes-Bug: #1532384

Subclass keystoneclient.session.Session to add the timing hooks to
record the elapsed time returned by requests.Response objects, including
the redirection history.  Redirects are included individually and not
rolled into the total time for the original request.

This works for all clients that use OSC's session.

Closes-Bug: #1402577
Change-Id: I9360c90c151579b89a37edb8c11c17feb15b3cb9

Add support for --timing options.  Use cliff via a pseudo-command
'Timing' to support multiple outputformats.

If an output format other than the default 'table' is selected
use CSV since the timing data is in list form.

Will pick up timing data for any client object that has a method
similar to novaclient's get_timings().

TODO:
* Stop instantiating all of the clientmanager client objects just
  to check for timing data.  Descriptor magic required?

Change-Id: I7f1076b7a250fba6a8b24b2ae9353a7f51b792b2