I8849ae0f54605e003d5b294ca3d66dcef89d7d27 made it possible for
_get_instance_block_device_info to take a BDM parameter instead of
loading the BDM from the db. This allow us to load the BDM a bit
earlier in the call chain and pass that BDM to the notification calls
too.
The remaining calls of the notify_about_instance_action does not have
the BDM loaded already.
Change-Id: Icc3ffe4037a44f4f323bec2f80d99ca226742e22
Related-Bug: #1718226