test: Require standard txs in regtest

test/functional/feature_cltv.py

@@ -57,7 +57,11 @@ def cltv_validate(node, tx, height):
 class BIP65Test(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
-        self.extra_args = [['-whitelist=127.0.0.1', '-par=1']]  # Use only one script thread to get the exact reject reason for testing
+        self.extra_args = [[
+            '-whitelist=127.0.0.1',
+            '-par=1',  # Use only one script thread to get the exact reject reason for testing
+            '-acceptnonstdtxn=1',  # cltv_invalidate is nonstandard
+        ]]
         self.setup_clean_chain = True
         self.rpc_timeout = 120