Even though we generally wait until a node has seen the gossip,
that doesn't mean that connectd has processed it! This means when
we connect it may still send us "old" gossip.
So we set the OPT_GOSSIP_QUERIES bit, which means don't send until we
ask. But now it sends us WIRE_QUERY_CHANNEL_RANGE, so everyone needs
to filter that out.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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