requester: Modified MctpDiscovery class

Modified MctpDiscovery class to take list of managers instead of single
fwManager. The change is for adding platform-mc manager.
Added loadStaticEndpoints API for MCTP layer which doesn't implement
/xyz/openbmc_project/MCTP/Endpoint.Interface

The patch is part of implementation of design document below.
https://gerrit.openbmc-project.xyz/c/openbmc/docs/+/47252

Signed-off-by: Gilbert Chen <gilbert.chen@arm.com>
Signed-off-by: Thu Nguyen <thu@os.amperecomputing.com>
Change-Id: I1e1673504583a87f2a9bc3adf76fb49c2dc30254
diff --git a/requester/test/mock_mctp_discovery_handler_intf.hpp b/requester/test/mock_mctp_discovery_handler_intf.hpp
new file mode 100644
index 0000000..8aada96
--- /dev/null
+++ b/requester/test/mock_mctp_discovery_handler_intf.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "requester/mctp_endpoint_discovery.hpp"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+namespace pldm
+{
+
+class MockManager : public pldm::MctpDiscoveryHandlerIntf
+{
+  public:
+    MOCK_METHOD(void, handleMctpEndpoints, (const MctpInfos& mctpInfos),
+                (override));
+    MOCK_METHOD(void, handleRemovedMctpEndpoints, (const MctpInfos& mctpInfos),
+                (override));
+};
+
+} // namespace pldm