rpc: add a do_not_relay boolean to tx submission

Just to make it easier

src/rpc/core_rpc_server.cpp

@@ -383,7 +383,7 @@ namespace cryptonote
       return true;
     }
 
-    if(!tvc.m_should_be_relayed)
+    if(!tvc.m_should_be_relayed || req.do_not_relay)
     {
       LOG_PRINT_L0("[on_send_raw_tx]: tx accepted, but not relayed");
       res.reason = "Not relayed";

src/rpc/core_rpc_server_commands_defs.h

@@ -221,12 +221,14 @@ namespace cryptonote
     struct request
     {
       std::string tx_as_hex;
+      bool do_not_relay;
 
       request() {}
       explicit request(const transaction &);
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(tx_as_hex)
+        KV_SERIALIZE(do_not_relay)
       END_KV_SERIALIZE_MAP()
     };
 

src/wallet/wallet2.cpp

@@ -1974,6 +1974,7 @@ void wallet2::commit_tx(pending_tx& ptx)
 
   COMMAND_RPC_SEND_RAW_TX::request req;
   req.tx_as_hex = epee::string_tools::buff_to_hex_nodelimer(tx_to_blob(ptx.tx));
+  req.do_not_relay = false;
   COMMAND_RPC_SEND_RAW_TX::response daemon_send_resp;
   m_daemon_rpc_mutex.lock();
   bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemon_address + "/sendrawtransaction", req, daemon_send_resp, m_http_client, 200000);