Describe how to configure and validate fernet key rotation using `keystone-manage fernet_rotate`.
Assigning to Martin for review.
Building fernet test env
Initially I hadn't finished the key rotation for containers. But ended up being able to and it's in OSP12. here's the docs about it http://tripleo.org/install/post_deployment/fernet_key_rotation.html
Added updates for comment 19
Moving to `verified` for tracking
The GA milestone has now passed. Moving this tracker to 'async'.
Updated guide was published: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/12/html-single/deploy_fernet_on_the_overcloud/#sec-fernet
Content was published: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/12/html-single/deploy_fernet_on_the_overcloud/#rotate_the_fernet_keys