This changes the HarnessNode structure to hold onto the client grpc
connection made during startup so that it can close it during shutdown.
This is needed because the grpc.Dial function spins a new goroutine that
attempts to maintain an open connection to the target endpoint and
without calling Close() in the connection while shutting down the node
we leak this goroutine to the rest of the tests.
This changes TCP port selection in integration tests from being
sequential, based on the node ID to being sequential but tested before
assigment.
This should reduce the number of flaky tests that fail due to the port
already being used by another process in the CI server.
This fixes an issue where the last tagged field of an invoice could get
broken due to the malleability of bech32 checksums.
The addition of a specific character in the second to last position of
the checksum could cause the previous signature field to mutate and thus
point to a different public node.
This changes the defer function in the test for channel backups to
correctly close over the 'dave' variable.
Without this closure, the shutdownAndAssert call would attempt to
shutdown the original (non-restored) dave instead of the most recently
created (restored) dave, causing a leak of a node during tests.
Matheus Degiovani