Use generate* from TestFramework

The changes in feature_rbf can be reviewed with
--color-moved=dimmed-zebra --color-moved-ws=ignore-all-space

test/functional/feature_maxuploadtarget.py

@@ -67,7 +67,7 @@ class MaxUploadTest(BitcoinTestFramework):
             p2p_conns.append(self.nodes[0].add_p2p_connection(TestP2PConn()))
 
         # Now mine a big block
-        mine_large_block(self.nodes[0], self.utxo_cache)
+        mine_large_block(self, self.nodes[0], self.utxo_cache)
 
         # Store the hash; we'll request this later
         big_old_block = self.nodes[0].getbestblockhash()
@@ -78,7 +78,7 @@ class MaxUploadTest(BitcoinTestFramework):
         self.nodes[0].setmocktime(int(time.time()) - 2*60*60*24)
 
         # Mine one more block, so that the prior block looks old
-        mine_large_block(self.nodes[0], self.utxo_cache)
+        mine_large_block(self, self.nodes[0], self.utxo_cache)
 
         # We'll be requesting this new block too
         big_new_block = self.nodes[0].getbestblockhash()