test: Enable various tests for usage with cli

These tests run successfully on current master without any changes.

test/functional/p2p_disconnect_ban.py

@@ -15,7 +15,6 @@ from test_framework.util import (
 class DisconnectBanTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 2
-        self.supports_cli = False
 
     def run_test(self):
         self.log.info("Connect nodes both ways")