Description of problem:

currently, to add or remove --can-share for glance member-create command we run it with --can-share for True and without the --can-share for false.

since when we list the members of an image we would see True/False in the can share info, I think that this command should be inline with all other commands that have a True/False param and that this command should be run as 'glance member-create <image> <tenant> --can-share True/False.

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

openstack-glance-2013.1.3-1.el6ost.noarch

How reproducible:

100%

Steps to Reproduce:
1. create an image and a tenant 
2. run: glance member-create <image> <tenant> --can-share 
3. run: glance member-list --image-id <image> 
4. run: glance member-create <image> <tenant> 
5. run: glance member-list --image-id <image> 

Actual results:

when we run the command with --can-share and list it we can see that the list under command is True and when we run it without --can-share we can see that the value is gone. 

Expected results:

this command should be in-line with other commands and have True/False params 
i.e glance member-create <image> <tenant> --can-share True/False

Additional info:

[root@opens-xxxx ~(keystone_admin)]# glance member-create 0ab0624d-e806-4d4d-b041-7e7ae76bbc80 e91123ca35724285a783f33103875dcb --can-share


root@opens-xxxx ~(keystone_admin)]# glance member-list --image-id 0ab0624d-e806-4d4d-b041-7e7ae76bbc80
+--------------------------------------+----------------------------------+-----------+
| Image ID                             | Member ID                        | Can Share |
+--------------------------------------+----------------------------------+-----------+
| 0ab0624d-e806-4d4d-b041-7e7ae76bbc80 | e91123ca35724285a783f33103875dcb | True      |
+--------------------------------------+----------------------------------+-----------+


[root@opens-xxxx ~(keystone_admin)]# glance member-create 0ab0624d-e806-4d4d-b041-7e7ae76bbc80 e91123ca35724285a783f33103875dcb


[root@opens-xxxx ~(keystone_admin)]# glance member-list --image-id 0ab0624d-e806-4d4d-b041-7e7ae76bbc80
+--------------------------------------+----------------------------------+-----------+
| Image ID                             | Member ID                        | Can Share |
+--------------------------------------+----------------------------------+-----------+
| 0ab0624d-e806-4d4d-b041-7e7ae76bbc80 | e91123ca35724285a783f33103875dcb |           |
+--------------------------------------+----------------------------------+-----------+