Add RSD oem specific links in Manger in RSD 2.1

Change-Id: I9b04d86391bfc0b25ff2fa3b014c3251f7d72bf9

rsd_lib/resources/v2_1/manager/manager.py

@@ -26,6 +26,23 @@ from rsd_lib.resources.v2_1.system import ethernet_interface
 from rsd_lib import utils as rsd_lib_utils
 
 
+class LinksIntelRackScaleField(base.CompositeField):
+
+    manager_for_services = base.Field(
+        "ManagerForServices", adapter=utils.get_members_identities
+    )
+
+    manager_for_switches = base.Field(
+        "ManagerForSwitches", adapter=utils.get_members_identities
+    )
+
+
+class LinksOemField(base.CompositeField):
+
+    intel_rackscale = LinksIntelRackScaleField("Intel_RackScale")
+    """Intel Rack Scale Design specific properties."""
+
+
 class LinksField(base.CompositeField):
 
     manager_for_servers = base.Field(
@@ -49,6 +66,9 @@ class LinksField(base.CompositeField):
        located in.
     """
 
+    oem = LinksOemField("Oem")
+    """Oem specific properties."""
+
 
 class SerialConsoleField(base.CompositeField):
     """SerialConsole field

rsd_lib/tests/unit/resources/v2_1/manager/test_manager.py

@@ -85,6 +85,14 @@ class TestManager(base.TestCase):
             ("/redfish/v1/Chassis/FabricModule1",),
             self.manager_inst.links.manager_for_chassis,
         )
+        self.assertEqual(
+            ("/redfish/v1/Services/RSS1",),
+            self.manager_inst.links.oem.intel_rackscale.manager_for_services,
+        )
+        self.assertEqual(
+            tuple(),
+            self.manager_inst.links.oem.intel_rackscale.manager_for_switches,
+        )
         self.assertEqual("On", self.manager_inst.power_state)
 
     def test_network_protocol(self):