* charm-helpers sync for classic charms
* charms.ceph sync for ceph charms
* rebuild for reactive charms
* sync tox.ini files as needed
* sync requirements.txt files to sync to standard
This patchset changes the handling of the identity-service relation data
from "the last connected charm in the relation-list is the data to use"
to "merge non None data from all relations, with the last one winning."
This is to handle the change in how keystone now sets relation data on
the identity-service relation: only the leader actually sets the
relation data. This means that the consuming charm only 'sees' relation
data from leader, with no keys from the non-leaders.
charms.reactive handles this by merging data from all the relations.
This change exhibits the same behaviour.
