Adds following to Planning service of OpenStack:
* patch_plan request
* patch method to Plan model
* tests for patch_plan request
* tests for patch method of Plan model
Adds following to Planning service of OpenStack:
* add_role_to_plan and remove_role_from_plan requests
* add_role and remove_role to Plan model
* add_to_plan and remove_from_plan to Role model
* tests for add_role_to_plan and remove_role_from_plan requests
* tests for add_role and remove_role of Plan model
* tests for add_to_plan and remove_from_plan of Role model
Adds following to Planning service of OpenStack:
* get_plan_templates request
* templates, master_template, environment and
provider_resource_templates methods to Plan model
* tests for get_plan_template request
* tests for template retrieving methods of Plan model
Adds following to Planning service of OpenStack:
* Plan model
* Plans model with find_by_uuid and find_by_* method
* list_plans request
* get_plan request
* tests for methods of Plans model
* tests for list_plans request
* tests for get_plan request