Merge #18617: test: add factor option to adjust test timeouts

2742c34286 test: add factor option to adjust test timeouts (Harris)

Pull request description:

  This PR adds a new option **factor** that can be used to adjust timeouts in various functional tests.
  Several timeouts and functions from `authproxy`, `mininode`, `test_node` and `util` have been adapted to use this option. The factor-option definition is located in `test_framework.py`.

  Fixes https://github.com/bitcoin/bitcoin/issues/18266
  Also Fixes https://github.com/bitcoin/bitcoin/issues/18834

ACKs for top commit:
  MarcoFalke:
    Thanks! ACK 2742c34286

Tree-SHA512: 6d8421933ba2ac1b7db00b70cf2bc242d9842c48121c11aadc30b0985c4a174c86a127d6402d0cd73b993559d60d4f747872d21f9510cf4806e008349780d3ef

test/functional/test_framework/test_framework.py

@@ -102,6 +102,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         self.bind_to_localhost_only = True
         self.set_test_params()
         self.parse_args()
+        self.rpc_timeout = int(self.rpc_timeout * self.options.factor) # optionally, increase timeout by a factor
 
     def main(self):
         """Main function. This should not be overridden by the subclass test scripts."""
@@ -168,6 +169,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
                             help="set a random seed for deterministically reproducing a previous test run")
         parser.add_argument("--descriptors", default=False, action="store_true",
                             help="Run test using a descriptor wallet")
+        parser.add_argument('--factor', type=float, default=1.0, help='adjust test timeouts by a factor')
         self.add_options(parser)
         self.options = parser.parse_args()
 
@@ -433,6 +435,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
                 chain=self.chain,
                 rpchost=rpchost,
                 timewait=self.rpc_timeout,
+                factor=self.options.factor,
                 bitcoind=binary[i],
                 bitcoin_cli=binary_cli[i],
                 version=versions[i],
@@ -579,6 +582,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
                     extra_args=['-disablewallet'],
                     rpchost=None,
                     timewait=self.rpc_timeout,
+                    factor=self.options.factor,
                     bitcoind=self.options.bitcoind,
                     bitcoin_cli=self.options.bitcoincli,
                     coverage_dir=None,