Introduce -testactivationheight=name@height setting

test/functional/p2p_segwit.py

@@ -192,8 +192,8 @@ class SegWitTest(BitcoinTestFramework):
         self.num_nodes = 2
         # This test tests SegWit both pre and post-activation, so use the normal BIP9 activation.
         self.extra_args = [
-            ["-acceptnonstdtxn=1", "-segwitheight={}".format(SEGWIT_HEIGHT), "-whitelist=noban@127.0.0.1"],
-            ["-acceptnonstdtxn=0", "-segwitheight={}".format(SEGWIT_HEIGHT)],
+            ["-acceptnonstdtxn=1", f"-testactivationheight=segwit@{SEGWIT_HEIGHT}", "-whitelist=noban@127.0.0.1"],
+            ["-acceptnonstdtxn=0", f"-testactivationheight=segwit@{SEGWIT_HEIGHT}"],
         ]
         self.supports_cli = False