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

* keystoneclient/v3/contrib/simple_cert.py
* keystoneclient/v3/contrib/endpoint_policy.py
* keystoneclient/v3/contrib/oauth1/access_tokens.py
* keystoneclient/v3/contrib/oauth1/request_tokens.py

Adding request-id to below V3 contrib API's is covered in base patch
[1] but this patch is specifically for V3 API's so covered their test
cases in this patch.

* keystoneclient/v3/contrib/endpoint_filter.py
* keystoneclient/v3/contrib/federation/identity_providers.py
* keystoneclient/v3/contrib/federation/mappings.py
* keystoneclient/v3/contrib/federation/protocols.py
* keystoneclient/v3/contrib/federation/service_providers.py

The methods in the resource class and resource manager return
a 'base.Response' class that has 'request_ids' property.
The caller can get request ids of the callee via that property.

[1] https://review.openstack.org/#/c/329913

Change-Id: I5f90c31020e0dd672a160c7b587f41ba8f2b596c
Co-authored-by: Dinesh Bhor <dinesh.bhor@nttdata.com>
Co-authored-by: Ankit Agrawal <ankit11.agrawal@nttdata.com>
Co-authored-by: Neha Alhat <neha.alhat@nttdata.com>
Implements: blueprint return-request-id-to-caller