https://developer.openstack.org/api-ref/block-storage/v3/?expanded=update-extra-specification-for-volume-type-detail,delete-extra-specification-for-volume-type-detail,show-volume-type-detail-detail,show-default-volume-type-detail,show-extra-specification-for-volume-type-detail,show-all-extra-specifications-for-volume-type-detail,create-or-update-extra-specs-for-volume-type-detail,update-a-volume-type-detail#show-default-volume-type Change-Id: Ia097263b2354534fc77f229cc257bc8de8dd51dc