Ceph MGR fails to start when installed on a node without existing
symlink to /etc/pve/ceph.conf.
Signed-off-by: Alwin Antreich <a.antreich@proxmox.com>
As in a situation where we /had/ a manager but destroyed it this
key's value is a empty string, and if we pass that to the WebUI we
get strange results form of a ghost MGR entry with ExtJS auto-ID
generation as name -> pretty confusing.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>