Steps to reproduce:
1. Bootstrap manager and start cluster
2. Enable SSL
3. Connect to m2 (can be from image) with "cfy profiles use", and join him to the cluster
4. Check "ssl status"
The result is that you can't upload blueprints or check the ssl status. Even after you remove the profile dir the error still reproduces: "'unicode' object does not support item assignment"
Fixed by adding a `ssl` config also to cluster-wide config. When enabling/disabling ssl on one manager, it will be enabled/disabled in the whole cluster.