Added CLI for every API we currently have.
Also:
* fixed url in WorkbookManager.update
* fixed project_id reconstruction by keystone
* added check for empty string of project_id and project_name
* added cliutils and log modules from oslo-incubator
Change-Id: I4e46de73b8f6ec858a466232aea53692278d486a
Implements: blueprint mistral-client-cli
aca36f75b2