Log failure to connect to geoclue as a warning, not info

Messages logged as info are not usually printed (only if G_MESSAGES_DEBUG is set). As this is a pretty significant error message, I think it should be logged as a warning, so it will be visible in the system logs without any special effort. The fact that it isn't caused me quite a bit of trouble trying to debug https://bugzilla.redhat.com/show_bug.cgi?id=2237530 .

Signed-off-by: Adam Williamson awilliam@redhat.com