test: enable functional tests with large rpc args for cli

Also, the following tests (for which self.supports_cli = False was not
set) will now work with --usecli:

feature_fastprune.py
feature_fee_estimation.py
feature_reindex_readonly.py
feature_taproot.py
mempool_package_rbf.py
p2p_net_deadlock.py
p2p_tx_download.py
rpc_packages.py

test/functional/feature_maxuploadtarget.py

@@ -52,7 +52,6 @@ class MaxUploadTest(BitcoinTestFramework):
         self.extra_args = [[
             f"-maxuploadtarget={UPLOAD_TARGET_MB}M",
         ]]
-        self.supports_cli = False
 
     def assert_uploadtarget_state(self, *, target_reached, serve_historical_blocks):
         """Verify the node's current upload target state via the `getnettotals` RPC call."""

test/functional/feature_pruning.py

@@ -69,7 +69,6 @@ class PruneTest(BitcoinTestFramework):
     def set_test_params(self):
         self.setup_clean_chain = True
         self.num_nodes = 6
-        self.supports_cli = False
         self.uses_wallet = None
 
         # Create nodes 0 and 1 to mine.

test/functional/mempool_limit.py

@@ -31,7 +31,6 @@ class MempoolLimitTest(BitcoinTestFramework):
         self.extra_args = [[
             "-maxmempool=5",
         ]]
-        self.supports_cli = False
 
     def test_rbf_carveout_disallowed(self):
         node = self.nodes[0]

test/functional/mining_basic.py

@@ -65,7 +65,6 @@ class MiningTest(BitcoinTestFramework):
             ["-fastprune", "-prune=1"]
         ]
         self.setup_clean_chain = True
-        self.supports_cli = False
 
     def mine_chain(self):
         self.log.info('Create some old blocks')

test/functional/p2p_1p1c_network.py

@@ -43,7 +43,6 @@ class PackageRelayTest(BitcoinTestFramework):
         self.extra_args = [[
             "-maxmempool=5",
         ]] * self.num_nodes
-        self.supports_cli = False
 
     def raise_network_minfee(self):
         fill_mempool(self, self.nodes[0])

test/functional/p2p_opportunistic_1p1c.py

@@ -61,7 +61,6 @@ class PackageRelayTest(BitcoinTestFramework):
         self.extra_args = [[
             "-maxmempool=5",
         ]]
-        self.supports_cli = False
 
     def create_tx_below_mempoolminfee(self, wallet):
         """Create a 1-input 1sat/vB transaction using a confirmed UTXO. Decrement and use

test/functional/p2p_segwit.py

@@ -221,7 +221,6 @@ class SegWitTest(BitcoinTestFramework):
             ["-acceptnonstdtxn=1", f"-testactivationheight=segwit@{SEGWIT_HEIGHT}", "-par=1"],
             ["-acceptnonstdtxn=0", f"-testactivationheight=segwit@{SEGWIT_HEIGHT}"],
         ]
-        self.supports_cli = False
 
     # Helper functions
 

test/functional/wallet_taproot.py

@@ -191,7 +191,6 @@ class WalletTaprootTest(BitcoinTestFramework):
         self.num_nodes = 2
         self.setup_clean_chain = True
         self.extra_args = [['-keypool=100'], ['-keypool=100']]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()