In this changeset, I added all the required modification in order
for Watcher to enable the implementation of versioned notifications.
Change-Id: I600ecbc767583824555b016fb9fc7faf69c53b39
Partially-Implements: blueprint watcher-notifications-ovo
In this changeset, I implemented the notification handling (Rx only)
system for consuming incoming notifications, more especially the Nova
ones. The notifications handlers also contain the logic which
incrementally updates the Compute model.
Change-Id: Ia036a5a2be6caa64b7f180de38821b57c624300c
Partially-implements: blueprint cluster-model-objects-wrapper
