pldmd: move to libpldm instance ID alloc/free

Refactor the dbus_api::Requester class to be implemented in terms of
libpldm's instance ID database. To make that easier to deal with we
introduce a light-weight RAII C++ binding along with a helper class for
unit tests.

Change-Id: Ia03de8245dfb114e6266ba36dcf26ca4398a4ce0
Signed-off-by: Rashmica Gupta <rashmica@linux.ibm.com>
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/libpldmresponder/test/libpldmresponder_base_test.cpp b/libpldmresponder/test/libpldmresponder_base_test.cpp
index 60edae3..f1ecfc3 100644
--- a/libpldmresponder/test/libpldmresponder_base_test.cpp
+++ b/libpldmresponder/test/libpldmresponder_base_test.cpp
@@ -1,5 +1,7 @@
 #include "common/utils.hpp"
 #include "libpldmresponder/base.hpp"
+#include "pldmd/instance_id.hpp"
+#include "test/test_instance_id.hpp"
 
 #include <libpldm/base.h>
 #include <string.h>
@@ -16,11 +18,13 @@
 {
   protected:
     TestBaseCommands() :
-        requester(pldm::utils::DBusHandler::getBus(), "/abc/def"),
+        instanceIdDb(), requester(pldm::utils::DBusHandler::getBus(),
+                                  "/abc/def", this->instanceIdDb),
         event(sdeventplus::Event::get_default())
     {}
 
     uint8_t mctpEid = 0;
+    TestInstanceIdDb instanceIdDb;
     Requester requester;
     sdeventplus::Event event;
 };