rx_arping for 10g mode (#359)

* test for rx_arping

* arping ip and interface from client interface

* apring thread added to thread ids

* clean code for thread for arping

* removing the assumption that udpip1 fill be updated along with udpip2

* review, replacing syscall(sys_gettid) with gettid()

slsReceiverSoftware/src/Arping.h

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: LGPL-3.0-or-other
+// Copyright (C) 2021 Contributors to the SLS Detector Package
+#pragma once
+/**
+ *@short creates/destroys an ARPing thread to arping the interfaces slsReceiver
+is listening to.
+ */
+
+#include "receiver_defs.h"
+#include "sls/logger.h"
+
+#include <atomic>
+#include <thread>
+
+class Arping {
+
+  public:
+    void SetInterfacesAndIps(const int index, const std::string &interface,
+                             const std::string &ip);
+    pid_t GetThreadId() const;
+    bool IsRunning() const;
+    void StartThread();
+    void StopThread();
+
+  private:
+    void TestCommands();
+    std::string ExecuteCommands();
+    void ThreadExecution();
+
+    std::vector<std::string> commands =
+        std::vector<std::string>(MAX_NUMBER_OF_LISTENING_THREADS);
+    std::atomic<bool> runningFlag{false};
+    std::thread t;
+    std::atomic<pid_t> threadId{0};
+};