Comment 1 for bug 1796494

Currently, the only procedure to change an application password I found is as follows:

# removing a relation does not result in removal or re-rendering of configs or service downtime (the Keystone charm does not stop the service)
juju remove-relation keystone mysql

# a service-name based password entry in leader settings needs to be updated
juju run --unit mysql/0 'leader-set mysql-keystone.passwd=newpasswd'

# triggers password retrieval from leader settings followed by placing it into the relation bucket for keystone units to consume
juju add-relation keystone mysql