test: Make requires_wallet private

The bool is only used to call a public helper, which some tests already
do. So use the public helper in all tests consistently and make the
confusingly named bool private.

test/functional/interface_bitcoin_cli.py

@@ -69,8 +69,6 @@ class TestBitcoinCli(BitcoinTestFramework):
     def set_test_params(self):
         self.setup_clean_chain = True
         self.num_nodes = 1
-        if self.is_specified_wallet_compiled():
-            self.requires_wallet = True
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_cli()
@@ -114,6 +112,7 @@ class TestBitcoinCli(BitcoinTestFramework):
 
         self.log.info("Test -getinfo returns expected network and blockchain info")
         if self.is_specified_wallet_compiled():
+            self.import_deterministic_coinbase_privkeys()
             self.nodes[0].encryptwallet(password)
         cli_get_info_string = self.nodes[0].cli('-getinfo').send_cli()
         cli_get_info = cli_get_info_string_to_dict(cli_get_info_string)