Add test-util feature such that background processor can import the crate differently for tests to fix the pruning verification test.

Author: arik-so

lightning-background-processor/Cargo.toml

@@ -26,3 +26,4 @@ futures-util = { version = "0.3", default-features = false, features = ["async-a
 lightning = { version = "0.0.113", path = "../lightning", features = ["_test_utils"] }
 lightning-invoice = { version = "0.21.0", path = "../lightning-invoice" }
 lightning-persister = { version = "0.0.113", path = "../lightning-persister" }
+lightning-rapid-gossip-sync = { version = "0.0.113", path = "../lightning-rapid-gossip-sync", features = ["_test_utils"] }

lightning-rapid-gossip-sync/Cargo.toml

@@ -10,6 +10,7 @@ Utility to process gossip routing data from Rapid Gossip Sync Server.
 """
 
 [features]
+_test_utils = []
 default = ["std"]
 no-std = ["lightning/no-std"]
 std = ["lightning/std"]