This patch implements the last code bits pending to
conclude the new DB engine facade migration.
Due to the resultant interactions in the modified code, is
not possible to submit smaller patches; this code must be
migrated at once.
Partially-Implements blueprint: enginefacade-switch
Signed-off-by: Slawek Kaplonski <skaplons@redhat.com>
Co-Authored-By: Rodolfo Alonso Hernandez <ralonsoh@redhat.com>
Change-Id: Id3f09b78c8d0a8daa7ec4fa6f5bf79f7d5ab8f8b
bf35cf65c8