Added wrapper classes which are inherited from base data types list,
tuple and dict. Each of these wrapper classes contains a 'request_ids'
attribute which will be populated with a 'x-openstack-request_id'
received in a header from a response body.
This change is required to return 'request_id' from
client to log request_id mappings of cross projects.
Partial-Implements: blueprint return-request-id-to-caller
Change-Id: I3aadb4d8bf675e20f2094b66a23ac20f455a99eb
1619f11b9c