
Nova has remvoed the API extensions concept since stein release - https://blueprints.launchpad.net/nova/+spec/api-extensions-merge-stein Nova cannot be configured to enable/disable extension now and all extensions are enabled by default. Stein is not supported by the Tempest master so it is safe to remove the config optionn as well as the checks from tests. Change-Id: I05c0a3b23d0824e1eb9a79353dcf2976c6bcf602