redfish-schema: add Protocol

The Drive schema indirectly references Protocol, but it is missing
from the schema list.  Modify `update_schemas.py` to include it and
run, checking in the results.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic3adad00924d450d3b7062c94ec04fc26e4cc9b9
diff --git a/static/redfish/v1/$metadata/index.xml b/static/redfish/v1/$metadata/index.xml
index a82fb50..c0bc62f 100644
--- a/static/redfish/v1/$metadata/index.xml
+++ b/static/redfish/v1/$metadata/index.xml
@@ -2862,6 +2862,9 @@
     <edmx:Reference Uri="/redfish/v1/schema/ProcessorCollection_v1.xml">
         <edmx:Include Namespace="ProcessorCollection"/>
     </edmx:Reference>
+    <edmx:Reference Uri="/redfish/v1/schema/Protocol_v1.xml">
+        <edmx:Include Namespace="Protocol"/>
+    </edmx:Reference>
     <edmx:Reference Uri="/redfish/v1/schema/RedfishError_v1.xml">
         <edmx:Include Namespace="RedfishError.v1_0_0"/>
         <edmx:Include Namespace="RedfishError.v1_0_1"/>