This patch adds conductor support for instance_get_all_by_filters(),
and supports the following APIs through that method:
- instance_get_all()
- instance_get_all_by_host()
- instance_get_all_by_filters()
Further, it adds support for the following APIs:
- instance_get_all_hung_in_rebooting()
- instance_get_active_by_window()
It also makes compute/manager use conductor for these operations, with
one exception. Currently, ComputeManager.init_host () lists all
instances associated with the host, which may happen before a conductor
service is available. This will be handled separately due to the
sequencing concerns.
Related to bp/no-db-compute-manager
Change-Id: I0dd346fd632aa15cd301386bc392502b95709529
ef4de43c5d