Added OemComputerSystems and properties for provisioning

 - Added OemComputerSystems Schema for provisioning properties
 - Added "ProvisioningStatus" Oem property with EnumType
    1) NotProvisioned
    2) ProvisionedButNotLocked
    3) ProvisionedAndLocked

Intel secures platform firmware components using Intel PFR mechanism.
This may differ for other Oem's(non-intel platforms) but the properties
like Provisioned, Locked states should be of generic as per NIST SP
800-193. Added build time flag to enable/disable PFR supported platforms.

Tested:
 - By default provisioning feature is OFF, using GET method on below URI
verified Oem Property and observed no such property. This is default
behaviour on upstream.

URI: /redfish/v1/Systems/system
Response: No "Oem" property.

 - Enabled provisioning feature in Intel platforms and Verified using Systems
URI. Ran the redfish validator tool and no new issues found due to this
change.
URI: /redfish/v1/Systems/system
RESPONSE:
.....

"Oem": {
        "OpenBmc": {
            "FirmwareProvisioning": {
                "ProvisioningStatus": "NotProvisioned"
            }
        }
    }
.....

Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com>
Change-Id: I674e6075263f4fa2962637d3add47393a1ff0c0b
diff --git a/static/redfish/v1/$metadata/index.xml b/static/redfish/v1/$metadata/index.xml
index 48090d4..7383365 100644
--- a/static/redfish/v1/$metadata/index.xml
+++ b/static/redfish/v1/$metadata/index.xml
@@ -1877,5 +1877,7 @@
     </edmx:Reference>
     <edmx:Reference Uri="/redfish/v1/schema/Crashdump_v1.xml">
         <edmx:Include Namespace="Crashdump.v1_0_0"/>
+    <edmx:Reference Uri="/redfish/v1/schema/OemComputerSystem_v1.xml">
+        <edmx:Include Namespace="OemComputerSystem"/>
     </edmx:Reference>
 </edmx:Edmx>