use fetch_secret for ceph secret

modules/conf_ceph.sh

@@ -68,11 +68,12 @@ conf_ceph()
         tag_file /etc/fstab
         echo >> /etc/fstab
         local srvlist=$(echo $CEPH_SRV_NAMES | sed "s/ /,/g")
+        local secret=$(fetch_secret "$CEPH_SECRET")
         if [[ -z $(grep $srvlist /etc/fstab) ]]; then
             echo "# Ceph :" >> /etc/fstab
             for mnt in $CEPH_MOUNTS; do
                 mkdir -pv $mnt
-                echo "$srvlist:/    $(eval echo \$CEPH_MP_$mnt)       ceph    defaults,_netdev,name=admin,secret=$CEPH_SECRET,id=$mnt  0 0" >> /etc/fstab
+                echo "$srvlist:/    $(eval echo \$CEPH_MP_$mnt)       ceph    defaults,_netdev,name=admin,secret=$secret,id=$mnt  0 0" >> /etc/fstab
             done
         else
             prnt W "Ceph entry already in /etc/fstab, nothing to do"