Move to 2021.3

Update the script to point at 2021.3, change the path of the files since
they moved again, and run the script.

Since we have an exclude list, this only brings in new versions of
schemas bmcweb already uses.

Overview of 2021.3:
https://www.dmtf.org/sites/default/files/Redfish_Release_2021.3_Overview.pdf

Overall, the release wasn't huge.

IBM plans to use:
PCIeSlot to Processor
FabricAdapter to PCIeDevice

Tested: See new schemas. No new validator errors.
curl -k https://$bmc/redfish/v1/JsonSchemas/Certificate/Certificate.json
{
    "$id": "http://redfish.dmtf.org/schemas/v1/Certificate.v1_5_0.json",

Change-Id: Idf28cb164d220b059dace91e352fee732bf0c842
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/static/redfish/v1/JsonSchemas/MetricDefinition/MetricDefinition.json b/static/redfish/v1/JsonSchemas/MetricDefinition/MetricDefinition.json
index 8df9ecb..3324afa 100644
--- a/static/redfish/v1/JsonSchemas/MetricDefinition/MetricDefinition.json
+++ b/static/redfish/v1/JsonSchemas/MetricDefinition/MetricDefinition.json
@@ -1,5 +1,5 @@
 {
-    "$id": "http://redfish.dmtf.org/schemas/v1/MetricDefinition.v1_2_0.json",
+    "$id": "http://redfish.dmtf.org/schemas/v1/MetricDefinition.v1_2_1.json",
     "$ref": "#/definitions/MetricDefinition",
     "$schema": "http://redfish.dmtf.org/schemas/v1/redfish-schema-v1.json",
     "copyright": "Copyright 2014-2021 DMTF. For the full DMTF copyright policy, see http://www.dmtf.org/about/policies/copyright",
@@ -229,7 +229,7 @@
                             }
                         ]
                     },
-                    "longDescription": "This property shall list the metric properties that are part of a calculation.  This property should be present when the value of the ImplementationType property is `Synthesized or `Calculated`.",
+                    "longDescription": "This property shall list the metric properties that are part of a calculation.  This property should be present when the value of the ImplementationType property is `Synthesized` or `Calculated`.",
                     "type": "array"
                 },
                 "CalculationTimeInterval": {
@@ -538,5 +538,5 @@
     },
     "owningEntity": "DMTF",
     "release": "2021.1",
-    "title": "#MetricDefinition.v1_2_0.MetricDefinition"
+    "title": "#MetricDefinition.v1_2_1.MetricDefinition"
 }
\ No newline at end of file