Imported Translations from Transifex

Change-Id: I58c8020ccaa88361bfe7062fa094f530461aea96
Move migration_get_unconfirmed_by_dest_compute to conductor

This patch moves compute/manager's use of the db query
migration_get_unconfirmed_by_dest_compute to the conductor.

Related to blueprint no-db-compute-manager

Change-Id: Ic92f3ae09f831465d12809c14c4a18ffd394f26f
Merge "Imported Translations from Transifex"