test: fix RPC coverage check

test/functional/create_cache.py

@@ -16,6 +16,7 @@ class CreateCache(BitcoinTestFramework):
 
     def set_test_params(self):
         self.num_nodes = 0
+        self.uses_wallet = True
 
     def setup_network(self):
         pass

test/functional/test_framework/test_framework.py

@@ -877,7 +877,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
                     cache_node_dir,
                     chain=self.chain,
                     extra_conf=["bind=127.0.0.1"],
-                    extra_args=['-disablewallet'],
+                    extra_args=[],
                     rpchost=None,
                     timewait=self.rpc_timeout,
                     timeout_factor=self.options.timeout_factor,