lnd->lightning open channel failed if amount <57201 satoshi

[arowser]

Issue and Steps to Reproduce

lnd->lightning open channel failed if amount <57201 satoshi, LND show:

[lncli] rpc error: code = Code(189) desc = You gave bad parameters:Our channel reserve 30000 would be below their dust 54600

if fund amount <57201 sat , the lnd->lightningd openchannel will failed, but lightningd->lnd will success.

The reason is when open channel, if local reserve < dust_limit, clightning will set local_reserve = dust_limit, local reserve= (state->funding.satoshis + 99) / 100,
but clightning dust limit is 546, but lnd is 573:
https://github.com/ElementsProject/lightning/blob/master/openingd/openingd.c#L306

It could be reproduced with https://github.com/arowser/lightning-integration/tree/dust_limit

TEST_DEBUG=1 py.test -v test.py  -s -k 'test_lnd_clightning_dust_open_channel[lnd_lightning]'

[arowser]

Ref lightningnetwork/lnd#1142