Fetch the images fingerprints of the current online node.
Fetch the images fingerprints of the current online node.

Signed-off-by: gary-wzl77 <90a015cf80ede76becc6870d7da1b8bac38ededa@canonical.com>

lxc/lxd,stgraber/lxd,stgraber/lxd,Skarlso/lxd,lxc/lxd,Skarlso/lxd,hallyn/lxd,atxwebs/lxd,lxc/lxd,lxc/lxd,hallyn/lxd,stgraber/lxd,atxwebs/lxd,stgraber/lxd,mjeanson/lxd,stgraber/lxd,Skarlso/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd,Skarlso/lxd,hallyn/lxd,hallyn/lxd,lxc/lxd,stgraber/lxd,mjeanson/lxd,lxc/lxd,atxwebs/lxd,hallyn/lxd,atxwebs/lxd,mjeanson/lxd