Create a new base REST API interface

* restapi module provides basic REST API support
  * uses dicts rather than Resource classes
  * JSON serialization/deserialization
  * log requests in 'curl' format
  * basic API boilerplate for create/delete/list/set/show verbs
* ignore H302 due to urllib import

* implement flavor list snd flavor show as an example

TODO:
* put caching back in (based on novaclient or ocl?)
* verify string encoding
* verify py33 compatibility

Change-Id: I3cb91e44e631ee19e9f5dea19b6bac5d599d19ce
test restapi in flavor commands

Change-Id: Id05b366e73fd63ab36941ee776752205c83ecd6d
Add a proof-of-concept for Object API commands

* Add object-store API to ClientManager
* Add object-store client
* Add Object API library in openstackclient.object.v1.lib
* Add Object API list command

Change-Id: Ib1770d45efa8871959826b85faafa1e0bcef0a03
Merge branch 'rest-api-base' into dt-test
Merge branch 'object-poc' into dt-test
Merge branch 'identity-ec2-tests' into dt-test
Merge branch 'image-v2-v2' into dt-test