Add parsers for the Redfish resources in redfish-map.md

Pure functions for ServiceRoot, ComputerSystem (facts, power state, reset action and ActionInfo), Processors, Memory, Storage/Drives/SimpleStorage, Chassis Thermal and Power as well as ThermalSubsystem/PowerSubsystem/Sensors (with environment_sources to pick whichever exists), Manager, EthernetInterfaces, ManagerNetworkProtocol, accounts, firmware inventory and log services/entries.

tests/parsers/test_firmware.py

@@ -0,0 +1,31 @@
+from napalm_redfish.parsers import parse_firmware
+
+INVENTORY = "/redfish/v1/UpdateService/FirmwareInventory"
+
+
+def test_firmware_bmc(rackmount):
+    fw = parse_firmware(rackmount(INVENTORY + "/BMC"))
+    assert fw == {
+        "id": "BMC",
+        "name": "Contoso BMC Firmware",
+        "version": "1.45.455b66-rev4",
+        "updateable": True,
+        "manufacturer": "Contoso",
+        "release_date": "2017-08-22T12:00:00Z",
+        "state": "Enabled",
+        "health": "OK",
+        "related": ["/redfish/v1/Managers/BMC"],
+    }
+
+
+def test_firmware_bios(rackmount):
+    fw = parse_firmware(rackmount(INVENTORY + "/BIOS"))
+    assert fw["version"] == "P79 v1.45"
+    assert fw["related"] == ["/redfish/v1/Systems/437XR1138R2/Bios"]
+
+
+def test_firmware_minimal():
+    fw = parse_firmware({"Id": "BMC", "Name": "BMC", "Version": "03.91"})
+    assert fw["version"] == "03.91"
+    assert fw["updateable"] is None
+    assert fw["related"] == []