tests: ensure functional tests set permitbaremultisig=1 when needed

The mempool_dust and mempool_sigoplimits functional tests both use bare
multisig txs, so ensure they're allowed by policy.

test/functional/mempool_dust.py

@@ -40,6 +40,7 @@
 class DustRelayFeeTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
+        self.extra_args = [['-permitbaremultisig']]
 
     def test_dust_output(self, node: TestNode, dust_relay_fee: Decimal,
                          output_script: CScript, type_desc: str) -> None:
@@ -101,7 +102,7 @@ def run_test(self):
             else:
                 dust_parameter = f"-dustrelayfee={dustfee_btc_kvb:.8f}"
                 self.log.info(f"Test dust limit setting {dust_parameter} ({dustfee_sat_kvb} sat/kvB)...")
-                self.restart_node(0, extra_args=[dust_parameter])
+                self.restart_node(0, extra_args=[dust_parameter, "-permitbaremultisig"])
 
             for output_script, description in output_scripts:
                 self.test_dust_output(self.nodes[0], dustfee_btc_kvb, output_script, description)

test/functional/mempool_sigoplimit.py

@@ -140,7 +140,7 @@ def test_sigops_package(self):
         self.log.info("Test a overly-large sigops-vbyte hits package limits")
         # Make a 2-transaction package which fails vbyte checks even though
         # separately they would work.
-        self.restart_node(0, extra_args=["-bytespersigop=5000"] + self.extra_args[0])
+        self.restart_node(0, extra_args=["-bytespersigop=5000","-permitbaremultisig=1"] + self.extra_args[0])
 
         def create_bare_multisig_tx(utxo_to_spend=None):
             _, pubkey = generate_keypair()