scripted-diff: test: replace command with msgtype

This is the functional test framework pendant for
7777e3624f, which renamed "strCommand" with
"msg_type" in the network processing code.

-BEGIN VERIFY SCRIPT-
 # Rename in test framework
 sed -i 's/command/msgtype/g' ./test/functional/test_framework/messages.py ./test/functional/test_framework/mininode.py
 # Rename in individual tests
 sed -i 's/command/msgtype/g' ./test/functional/p2p_invalid_messages.py ./test/functional/p2p_leak.py
-END VERIFY SCRIPT-

test/functional/p2p_invalid_messages.py

@@ -19,7 +19,7 @@ from test_framework.test_framework import BitcoinTestFramework
 class msg_unrecognized:
     """Nonsensical message. Modeled after similar types in test_framework.messages."""
 
-    command = b'badmsg'
+    msgtype = b'badmsg'
 
     def __init__(self, *, str_data):
         self.str_data = str_data.encode() if not isinstance(str_data, bytes) else str_data
@@ -28,7 +28,7 @@ class msg_unrecognized:
         return messages.ser_string(self.str_data)
 
     def __repr__(self):
-        return "{}(data={})".format(self.command, self.str_data)
+        return "{}(data={})".format(self.msgtype, self.str_data)
 
 
 class InvalidMessagesTest(BitcoinTestFramework):
@@ -50,7 +50,7 @@ class InvalidMessagesTest(BitcoinTestFramework):
         self.test_magic_bytes()
         self.test_checksum()
         self.test_size()
-        self.test_command()
+        self.test_msgtype()
         self.test_large_inv()
 
         node = self.nodes[0]
@@ -168,7 +168,7 @@ class InvalidMessagesTest(BitcoinTestFramework):
             msg = conn.build_message(msg_unrecognized(str_data="d"))
             cut_len = (
                 4 +  # magic
-                12 +  # command
+                12 +  # msgtype
                 4  #len
             )
             # modify checksum
@@ -183,7 +183,7 @@ class InvalidMessagesTest(BitcoinTestFramework):
             msg = conn.build_message(msg_unrecognized(str_data="d"))
             cut_len = (
                 4 +  # magic
-                12  # command
+                12  # msgtype
             )
             # modify len to MAX_SIZE + 1
             msg = msg[:cut_len] + struct.pack("<I", 0x02000000 + 1) + msg[cut_len + 4:]
@@ -191,13 +191,13 @@ class InvalidMessagesTest(BitcoinTestFramework):
             conn.wait_for_disconnect(timeout=1)
             self.nodes[0].disconnect_p2ps()
 
-    def test_command(self):
+    def test_msgtype(self):
         conn = self.nodes[0].add_p2p_connection(P2PDataStore())
         with self.nodes[0].assert_debug_log(['PROCESSMESSAGE: ERRORS IN HEADER']):
             msg = msg_unrecognized(str_data="d")
-            msg.command = b'\xff' * 12
+            msg.msgtype = b'\xff' * 12
             msg = conn.build_message(msg)
-            # Modify command
+            # Modify msgtype
             msg = msg[:7] + b'\x00' + msg[7 + 1:]
             self.nodes[0].p2p.send_raw_message(msg)
             conn.sync_with_ping(timeout=1)