* stable-2.13
  Fix sample 2.12 configuration
  NodeSshRemoveKey: Add retries for updating the target node
  SSH file manager: properly name assertion function
  Unittests: Simplify generating a master candidate node
  RemoveNodeSshKey: use retries when updating other nodes
  AddNodeSshKey: retries for all non-master nodes
  AddNodeSshKey: retry when target node not reachable
  Remove obsolete constant SSHS_RENAME
  Simplify testdata setup and teardown
  Consider offline nodes when removing SSH keys
  Consider offline nodes in NodeSshKeyAdd
  Use SSH file manager for unittests removing keys
  Use SSH file manager in key adding unit tests
  Introduce (testutils) SSH file manager
  Only delete old node keys in one-key-setup
  Add debug comments to RenewCrypto
  Fix renewing master node's SSH key
  Create CHROOT directory before copy COMP_FILENAME

* stable-2.12
  When assigning UUIDs to disks, do so recursively
  Fix sample 2.11 configuration
  Include hypervisor ...