add broadcast-address option

add broadcast address

update test with broadcast addr

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add hostname key to lookup

add hostname field

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update test

add broadcast address and hostname to nodes admin page

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more Address changes

update to use broadcast address with identify and all throughout the lookup

update test for broadcast_address

test broadcast address

remove debug line

add broadcast flag to lookupd

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update readme

switch address back to hostname for backward compat

update to use broadcast address

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