make test_list_lsp_server more readable

See comments from `fundchannel`

Remove spurious clone in list_lsp_servers

Code review comments from christian

libs/gl-client/src/lsps/client.rs

@@ -163,11 +163,11 @@ impl LspClient {
         let response = self.cln_client.list_nodes(request).await?;
 
         return Ok(response
-            .get_ref()
+            .into_inner()
             .nodes
-            .iter()
-            .filter(|x| is_feature_bit_enabled(&x.features(), BITNUM_LSP_FEATURE))
-            .map(|n| n.nodeid.clone())
+            .into_iter()
+            .filter(|x| is_feature_bit_enabled(x.features(), BITNUM_LSP_FEATURE))
+            .map(|n| n.nodeid)
             .collect());
     }
 }

libs/gl-testing/tests/test_lsps.py

@@ -115,14 +115,9 @@ def test_list_lsp_server(
     )
     n3: LightningNode = node_factory.get_node()
 
-    # Fund all nodes so they can open a channel
-    n1.fundwallet(100_000_000)
-    n2.fundwallet(100_000_000)
-    n3.fundwallet(100_000_000)
-
-    # Create a basic channel graph
-    n1.openchannel(n2, 500_000, connect=True)
-    n2.openchannel(n3, 500_000, connect=True)
+    # Create the channel-graph
+    n1.fundchannel(n2, announce_channel=True)
+    n2.fundchannel(n3, announce_channel=True)
 
     # Initiate the greenlight node
     c = clients.new()