Leverage the new cliff command class attribute (_description)
to get the help of a command, this allows us to mark strings
for translation. We could not do this before since the help
was grabbed from the docstring.

This also depends on a new release of cliff and a bump to the
minimum level in osc's requirements.

Closes-Bug: 1636209
Depends-On: Id915f6aa7d95a0ff3dc6e2ceaac5decb3f3bf0da
Change-Id: I8673080bb5625e8e3c499feaefd42dfc7121e96f

Raise warning when empty password set for user

Change-Id: If03516f3f1290e4c329fe3d1277dee0512de0410
Closes-Bug: #1607959

When output to shell, the token issue time is fine; however when
selecting the json formatter (via the --format json) option, an
exception is raised when formatting the dataetime data.

Rather than pass in the datetime data, we should format the data
with the ISO 8601 formatting.

Closes-Bug: 1619937
Change-Id: Iffebb2d5413fabfd283dfa94fc560fc37270f9dd

Change-Id: I1ed2983cf574ebd565eeac4f8199fbc3a2e29c8e

Fix argument precedence hack
  Working around issues in os-client-config <= 1.18.0

  This is ugly because the issues in o-c-c 1.19.1 run even deeper
  than in 1.18.0, so we're going to use 1.19.0 get_one_cloud() that
  is known to work for OSC and fix o-c-c with an axe.

Remove return values for set commands
  'identity provider set' and 'service provider set' were still
  returning their show-like data, this is a fail for set commands
  now, don't know how this ever passed before...

Constraints are ready to be used for tox.ini
  Per email[1] from Andreas, we don't need to hack at install_command
  any longer.

  [1] http://openstack.markmail.org/thread/a4l7tokbotwqvuoh

Co-authorioed-by: Steve Martinelli <s.martinelli@gmail.com>
Depends-On: I49313dc7d4f44ec897de7a375f25b7ed864226f1
Change-Id: I426548376fc7d3cdb36501310dafd8c44d22ae30

A role entity can now be specified as domain specific.

Closes-bug: #1606105
Change-Id: I564cf3da1d61f5bfcf85be591480d2f5c8d694a0

Convert to using ClientManager and OpenStackShell from osc-lib.
* Change all internal uses of ClientManager private attributes that are
  now public in osc-lib's ClientManager.  Leave back-compat copies in
  place in OSC's clientManager so we don't break plugins.
* Put some work-arounds in place for changes in osc-lib that we need until
  a new release makes it through the g-r and u-c change process.
* Add a test for Unicode decoding of argv in shell.main() to parallel
  the one in osc-lib.

Change-Id: I85289740d4ca081f2aca8c9b40ec422ad25d302c