v1 api image-list does not return shared images

The addition of the status column on image_members for the v2 api broke
backwards compatibility with the v1 api image members feature. This fix
forces that member_status='all' is passed to all v1 api calls to ensure
the v1 image members feature still works.

Note: Any images shared prior to migration 016 will be marked as 'pending'
yet will still be accessible via the v1 api since v1 has no notion of
image 'member_status'. Additionally, any new images shared via the v1 api
will follow the same behavior, being marked as 'pending'. In order for
shared images to be used with v2 they will need to have a 'member_status'
of 'accepted'.

Change-Id: I0ab9397e3663c6e2af8a18838f56803e64d84595
Fixes: bug #1132294
DocImpact
Merge remote-tracking branch 'm_src_repo/webob-issue' into build-temp