This implementation will add a new `user_variables.yml` override
glance_additional_stores which is set with the default values http, cinder
The operator can now independently enable Glance store protocols besides
glance_default_store.
A example configuration can be
glance_default_store = rbd
glance_additional_stores:
- swift
- http
- cinder
to maintain glance images over RBD and Swift/HTTP.
This is particular useful when adding new storage protocols
to glance while retaining access to the existing protocols/images.
DocImpact
Closes-Bug: #1524544
Change-Id: I2517fd5170bc67460fe3f66e0a0215af390343bc
a4a29ecf88