I looked into things further. It looks like there is an existing integration for the trusted_dashboard configuration between Keystone and Horizon/OpenStack Dashboard. it is called "websso-trusted-dashboard". Instead of manually adding the configuration to keystone.conf you should be able to do:
I looked into things further. It looks like there is an existing integration for the trusted_dashboard configuration between Keystone and Horizon/OpenStack Dashboard. it is called "websso- trusted- dashboard" . Instead of manually adding the configuration to keystone.conf you should be able to do:
juju integrate keystone: websso- trusted- dashboard openstack- dashboard: websso- trusted- dashboard
Replace "integrate" with "relate" if you are on Juju 2.x. That should handle that configuration step.