This change adds in the nova_api db migration that has to happen
within mitaka. This is a new required DB though the DB entry has
existed since Kilo.
Change:
* The change brings in two new DB create commands as well as an
additional task to execute the nova api_db sync.
* Additionally, new DB tunings were added to the defaults file.
Re-Implementation-Of: https://review.openstack.org/#/c/274932/9
UpgradeImpact
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
Change-Id: If63b541bfaf91333ac5963d391e6058ac8254eec