Now that there is actually support to load non-static information
(at least from fwupd perspective) it makes sense to support this
command in both tools.
This will perform updates with all currently present metadata.
It is "intended" for usage with local metadata repositories referring
to local files.
fwupdtool however does also support fetching a file from the web
and if the metadata refers to the file on the web it should also work
for that.
