v0.2.0

Added

• ceph_monitors data source exposing the cluster's monitors, their addresses,
  and whether each is currently in quorum.
• ceph_user resource and ceph_user / ceph_users data sources for managing
  Ceph Dashboard user accounts (RBAC), including roles and enablement.
• ceph_role resource and ceph_role / ceph_roles data sources for managing
  custom Ceph Dashboard RBAC roles and their scope permissions.