test: add parameterized constructor for msg_sendcmpct()

test/functional/test_framework/messages.py

@@ -1461,9 +1461,9 @@ class msg_sendcmpct:
     __slots__ = ("announce", "version")
     msgtype = b"sendcmpct"
 
-    def __init__(self):
-        self.announce = False
-        self.version = 1
+    def __init__(self, announce=False, version=1):
+        self.announce = announce
+        self.version = version
 
     def deserialize(self, f):
         self.announce = struct.unpack("<?", f.read(1))[0]