pytest: fix valgrind test flake regressions

Author: vincenzopalazzo

tests/test_gossip.py

@@ -1506,7 +1506,7 @@ def test_getroute_exclude_duplicate(node_factory):
 
 def test_getroute_exclude(node_factory, bitcoind):
     """Test getroute's exclude argument"""
-    l1, l2, l3, l4, l5 = node_factory.get_nodes(5)
+    l1, l2, l3, l4, l5 = node_factory.get_nodes(5, opts={'disable-plugin': 'cln-grpc'})
     node_factory.join_nodes([l1, l2, l3, l4], wait_for_announce=True)
 
     # This should work

tests/test_plugin.py

@@ -2533,7 +2533,7 @@ def test_important_plugin(node_factory):
     n = node_factory.get_node(options={"important-plugin": os.path.join(pluginsdir, "nonexistent")},
                               may_fail=True, expect_fail=True,
                               # Other plugins can complain as lightningd stops suddenly:
-                              broken_log='Plugin marked as important, shutting down lightningd|Reading sync lightningd: Connection reset by peer|Lost connection to the RPC socket|Plugin terminated before replying to RPC call|plugin-cln-xpay: askrene-create-layer failed with.*Unkown command',
+                              broken_log='Plugin marked as important, shutting down lightningd|Reading sync lightningd: Connection reset by peer|Lost connection to the RPC socket|Plugin terminated before replying to RPC call|plugin-cln-xpay: askrene-create-layer failed with.*Unknown command',
                               start=False)
 
     n.daemon.start(wait_for_initialized=False, stderr_redir=True)