using `juju cinder config-flags` should work as a workaround (e.g. `juju cinder config-flags="scheduler_default_filters=MyFiter"` ), more details on the format(s) accepted at https://github.com/openstack/charm-cinder/blob/master/charmhelpers/contrib/openstack/utils.py#L1900
using `juju cinder config-flags` should work as a workaround (e.g. `juju cinder config- flags=" scheduler_ default_ filters= MyFiter" ` ), more details on the format(s) accepted at https:/ /github. com/openstack/ charm-cinder/ blob/master/ charmhelpers/ contrib/ openstack/ utils.py# L1900