In order for python-openstackclient to support image imports to
mutliple stores at the same time an update is needed to the --all-stores
argument used by the client whereby the argument is explicitly set to contain
a boolean value. This change makes the argument do what it's supposed to and
do it in a way consistent with the API contract exposed by Glance.
Amend tests to support the change in type of the --all-stores option.
Change-Id: If5a72ca3ca68656555b5eb478e104d43f419c77e
Closes-Bug: 2138903
Signed-off-by: Piotr Sipika <psipika@bloomberg.net>
Co-authored-by: Stephen Finucane <stephenfin@redhat.com>