Today, the watcher Decision Engine is not relying on Ceilometer V2 API
to query the metrics necessary for the optimization algorithm.
This patchset update the documentation to use Ceilometer API with
watcher
Change-Id: I62cf0ea7b1766b00601f3dcbbbfe20b4a9567570
Following https://review.openstack.org/#/c/245903, this patchset
documents the implementation and integration of custom Strategies
with Watcher.
Change-Id: I573758695d67d523834f145824b6f6cfdd8997fe
