Add image API version to the reno

During the review I44852225ac8d3cb45bd04685e214fb39576b8206 , the comment
was up for adding the image API version to the corresponding reno.
This patch is for the following-up.

Partially implements blueprint consistent-service-method-names

Change-Id: Ic67ef30a4eff3438b118c6ac74639e51e61441a6
1 file changed