Comment 2 for bug 1719436

The unit that is stuck in bootstrapping seems to have managed to fail to correctly create its admin keyring as the file `/etc/ceph/ceph.client.admin.keyring` is empty, rather than containing the keyring as it should. This file is created by the ceph command `ceph-authtool $keyring --create-keyring --name=mon. --add-key=$secret --cap 'mon' 'allow *'`