Pass NodeContext, ConnMan, BanMan references more places

So g_connman and g_banman globals can be removed next commit.

src/wallet/rpcwallet.cpp

@@ -5,9 +5,9 @@
 
 #include <amount.h>
 #include <core_io.h>
-#include <init.h>
 #include <interfaces/chain.h>
 #include <key_io.h>
+#include <node/context.h>
 #include <outputtype.h>
 #include <policy/feerate.h>
 #include <policy/fees.h>