Add missing trait impls and methods in tests

Not super important because we are not currently relying on these
tests, but it's always easier to develop if all the code builds.

lightning/src/util/enforcing_trait_impls.rs

@@ -243,6 +243,15 @@ impl EcdsaChannelSigner for EnforcingSigner {
 	}
 }
 
+impl crate::chain::keysinterface::ExtraSign for EnforcingSigner {
+	fn sign_with_fund_key_callback<F>(&self, _: &mut F) where F: FnMut(&SecretKey) {
+		todo!()
+	}
+	fn set_channel_value_satoshis(&mut self, _: u64) {
+		todo!()
+	}
+}
+
 impl WriteableEcdsaChannelSigner for EnforcingSigner {}
 
 impl Writeable for EnforcingSigner {

lightning/src/util/test_utils.rs

@@ -253,6 +253,10 @@ impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
 	fn release_pending_monitor_events(&self) -> Vec<(OutPoint, Vec<MonitorEvent>, Option<PublicKey>)> {
 		return self.chain_monitor.release_pending_monitor_events();
 	}
+
+	fn update_channel_funding_txo(&self, _: OutPoint, new_funding_txo: OutPoint, _: u64) -> chain::ChannelMonitorUpdateStatus {
+		todo!()
+	}
 }
 
 pub struct TestPersister {