Sahara/Roadmap/IcehouseDraft

Savanna roadmap in Icehouse was discussed at Design Summit in Hong Kong, November 8. Highest priority is to graduate from the incubation.

Incubation graduation related

 * CI/CD - devstack, tempest, devstack-gate
 * Heat for resources orchestration

Other stuff

 * Implement v2 REST API - polished and based on Pecan/WSME
 * Guest agents instead of ssh/http calls from controller
 * Hadoop 2
 * Performance testing
 * Integration w/ Ceilometer
 * Distributed architecture
 * CLI in python-savannaclient
 * EDP improvements
 * UI / UX improvements