Log Message:
repmgr: updated to 5.1.0

5.1.0

repmgr: remove BDR 2.x support
repmgr: don't query upstream's data directory
repmgr: rename --recovery-conf-only to --replication-conf-only
repmgr: ensure postgresql.auto.conf is created with correct permissions
repmgr: minimize requirement to check upstream data directory location
  during "standby clone"
repmgr: warn about missing pg_rewind prerequisites when excuting
  "standby clone"
repmgr: add --upstream option to "node check"
repmgr: report error code on follow/rejoin failure due to non-available
  replication slot
repmgr: ensure "node rejoin" checks for available replication slots
repmgr: improve "standby switchover" completion checks
repmgr: add replication configuration file ownership check to
  "standby switchover"
repmgr: check the demotion candidate's registered repmgr.conf file can
  be found
repmgr: consolidate replication connection code
repmgr: check permissions for "pg_promote()" and fall back to pg_ctl
  if necessary
repmgr: in --dry-run mode, display promote command which will be used
repmgr: enable "service_promote_command" in PostgreSQL 12
repmgr: accept option -S/--superuser for "node check"