Fix the typo for the attribute word in comment and docstring.

Change-Id: Ic4a841c333d712a22503c1d7dc2d21619c601408

Added return-request-id-to-caller function to resources and resource
managers in the following files.

* keystoneclient/v3/projects.py
* keystoneclient/v3/registered_limits.py
* keystoneclient/v3/roles.py
* keystoneclient/v3/limits.py
* keystoneclient/v3/contrib/federation/saml.py

Also made changes in base.py for _put() method so that if
include_metadata is True, the response data should include request_id
instead of returning None as response.

Change-Id: Ifc0ec9a9d666cccfee3b08ac61596a3692307f23
Implements: blueprint return-request-id-to-caller

Refer to a merged commit.
https://review.openstack.org/#/c/588983/

TrivialFix

Change-Id: Ie3a02843e35382dd24230e91534b6ed72846957d

This change is required to return 'request_id' from client
to log request_id mappings of cross-project requests.

Instantiating class 'keystoneclient.v3.client.Client' using
'include_metadata=True' will cause manager response to return
a new 'Response' class instead of just the data. This 'Response'
class is going to have additional metadata properties available
like 'request_ids' and the original data will be available as
property 'data' to it.

This change is backward compatible since user has to set a new
parameter 'include_metadata=True' to client in order to get the
request_id returned.

Co-author: Dinesh Bhor <dinesh.bhor@nttdata.com>
Partially Implements: blueprint return-request-id-to-caller
Change-Id: Ibefaa484158ff08bfcacc1e2802d87fc26fd76a5

Adds the client functionality for the following project tag calls:
- Create a project tag on a project
- Check if a project tag exists on a project
- List project tags on a project
- Modify project tags on a project
- Delete a specific project tag on a project
- Delete all project tags on a project

Co-Authored-By: Jess Egler <jess.egler@gmail.com>
Co-Authored-By: Rohan Arora <ra271w@att.com>
Co-Authored-By: Tin Lam <tin@irrational.io>

Partially Implements: bp project-tags

Change-Id: I486b2969ae0aa2638842d842fb8b0955cc086d25

1.As mentioned in [1], we should avoid using six.iteritems to achieve
iterators. We can use dict.items instead, as it will return iterators
in PY3 as well. And dict.items/keys will more readable.
2.In py2, the performance about list should be negligible, see the
link [2].
[1] https://wiki.openstack.org/wiki/Python3
[2] http://lists.openstack.org/pipermail/openstack-dev/2015-June/066391.html

Change-Id: I18a6890935ebdbb589269379f21a0dd47d07eb3a

Before, the way filters were passed in would not allow filtering
on the same key.
For example:
    keystone.users.list(name__contains='test', name__contains='user')
This fails because of how kwargs handles key/value pairs.

This patch allows using multiple values for the same filter.
Example:
    keystone.users.list(name__contains=['test', 'user'])
Specifying the only one filter value is still functional as expected.

Co-Authored-By: Jeffrey Augustine <ja224e@att.com>
Partially-Implements: bp pci-dss-query-password-expired-users
Change-Id: I89cecf7e18974e7860ba0925840d6264168eabcb

It is untested and doesn't work for a while. It also causes a failure
when the method is used by other client or by keystoneclient itself.

Change-Id: Icdd53936a107933e275acd43b5ebe94b8d04bc4b
Closes-Bug: 1637530

Assigments replaced with argument assigment: endpoints.py, service_catalog.py
Note added: 'original_ip' value is never used: session.py
Refactor 'find()' method to increase readability: base.py

Change-Id: I469331b123fdf03e9e7c5d93e1c95da57d30fbbe