Merge pull request #2658 from wpaulino/bogus-channel-reestablish

Send bogus ChannelReestablish for unknown channels

diff --cc lightning/src/ln/channel.rs
Simple merge

diff --cc lightning/src/ln/channelmanager.rs
Simple merge

diff --cc lightning/src/ln/functional_tests.rs
Simple merge

diff --cc lightning/src/ln/payment_tests.rs
Simple merge