Pass NodeContext, ConnMan, BanMan references more places

So g_connman and g_banman globals can be removed next commit.

src/qt/test/rpcnestedtests.cpp

@@ -41,7 +41,7 @@ void RPCNestedTests::rpcNestedTests()
     std::string result;
     std::string result2;
     std::string filtered;
-    auto node = interfaces::MakeNode();
+    interfaces::Node* node = &m_node;
     RPCConsole::RPCExecuteCommandLine(*node, result, "getblockchaininfo()[chain]", &filtered); //simple result filtering with path
     QVERIFY(result=="main");
     QVERIFY(filtered == "getblockchaininfo()[chain]");