Description of problem:

currently we are only able to add a single tenant to a single image at a time

command structure is: glance member-create <image id> <tenant id> 

if we could add --multiple-tenants --multiple-images to the command or change the current structure to glance member-create --images-id <image> <image> --tenants-id <tenant> <tenant> it would be very helpful to users. 

Version-Release number of selected component (if applicable):

openstack-glance-2013.1.3-1.el6ost.noarch

How reproducible:

100%

Steps to Reproduce:
1. create more than one tenant 
2. create more than one image 
3. add multiple images to the same tenant 
4. add multiple tenants to the same image 

Actual results:

currently we need to add tenants to an image or an image to a tenant one at a time 

Expected results:

I think we should be able to add multiple images to a tenant in one command 
and to add multiple tenants to one image 

Additional info: