Refactor and clean up HK and Local Pool Modules

unittests/mock/cfdp/RemoteConfigTableMock.cpp

@@ -0,0 +1,15 @@
+#include "RemoteConfigTableMock.h"
+
+void cfdp::RemoteConfigTableMock::addRemoteConfig(const cfdp::RemoteEntityCfg& cfg) {
+  remoteCfgTable.emplace(cfg.remoteId, cfg);
+}
+
+bool cfdp::RemoteConfigTableMock::getRemoteCfg(const cfdp::EntityId& remoteId,
+                                               cfdp::RemoteEntityCfg** cfg) {
+  auto iter = remoteCfgTable.find(remoteId);
+  if (iter == remoteCfgTable.end()) {
+    return false;
+  }
+  *cfg = &iter->second;
+  return true;
+}