PUBAPI-914 - switch disk units from (incorrect) GiB to (correct) MiB.
PUBAPI-914 - switch disk units from (incorrect) GiB to (correct) MiB.

arekinath/sdc-cloudapi,KrisShannon/sdc-cloudapi,joyent/sdc-cloudapi,KrisShannon/sdc-cloudapi,joyent/sdc-cloudapi,arekinath/sdc-cloudapi,misterbisson/sdc-cloudapi,misterbisson/sdc-cloudapi